Replace := by = in nls.mk files

It currently doesn't make a difference, but it's inconsistent with
most other usage, and it might interfere with a future patch, so I'll
change it all in a separate commit.

Also, replace tabs with spaces for alignment.

src/backend/nls.mk

 # src/backend/nls.mk
-CATALOG_NAME	:= postgres
-AVAIL_LANGUAGES	:= de es fr ja pt_BR tr zh_CN zh_TW
-GETTEXT_FILES	:= + gettext-files
-GETTEXT_TRIGGERS:= _ errmsg errmsg_plural:1,2 errdetail errdetail_log \
+CATALOG_NAME     = postgres
+AVAIL_LANGUAGES  = de es fr ja pt_BR tr zh_CN zh_TW
+GETTEXT_FILES    = + gettext-files
+GETTEXT_TRIGGERS = _ errmsg errmsg_plural:1,2 errdetail errdetail_log \
     errdetail_plural:1,2 errhint errcontext \
     GUC_check_errmsg GUC_check_errdetail GUC_check_errhint \
     write_stderr yyerror parser_yyerror

src/bin/initdb/nls.mk

 # src/bin/initdb/nls.mk
-CATALOG_NAME	:= initdb
-AVAIL_LANGUAGES	:= cs de es fr it ja ko pt_BR ro ru sv ta tr zh_CN zh_TW
-GETTEXT_FILES	:= initdb.c ../../port/dirmod.c ../../port/exec.c
-GETTEXT_TRIGGERS:= _ simple_prompt
+CATALOG_NAME     = initdb
+AVAIL_LANGUAGES  = cs de es fr it ja ko pt_BR ro ru sv ta tr zh_CN zh_TW
+GETTEXT_FILES    = initdb.c ../../port/dirmod.c ../../port/exec.c
+GETTEXT_TRIGGERS = _ simple_prompt

src/bin/pg_basebackup/nls.mk

 # src/bin/pg_basebackup/nls.mk
-CATALOG_NAME	:= pg_basebackup
-AVAIL_LANGUAGES	:= de es
-GETTEXT_FILES	:= pg_basebackup.c
-GETTEXT_TRIGGERS:= _
+CATALOG_NAME     = pg_basebackup
+AVAIL_LANGUAGES  = de es
+GETTEXT_FILES    = pg_basebackup.c
+GETTEXT_TRIGGERS = _

src/bin/pg_config/nls.mk

 # src/bin/pg_config/nls.mk
-CATALOG_NAME	:= pg_config
-AVAIL_LANGUAGES	:= de es fr it ja ko nb pt_BR ro ru sv ta tr zh_CN zh_TW
-GETTEXT_FILES	:= pg_config.c ../../port/exec.c
-GETTEXT_TRIGGERS:= _
+CATALOG_NAME     = pg_config
+AVAIL_LANGUAGES  = de es fr it ja ko nb pt_BR ro ru sv ta tr zh_CN zh_TW
+GETTEXT_FILES    = pg_config.c ../../port/exec.c
+GETTEXT_TRIGGERS = _

src/bin/pg_controldata/nls.mk

 # src/bin/pg_controldata/nls.mk
-CATALOG_NAME	:= pg_controldata
-AVAIL_LANGUAGES	:= de es fr it ja ko pt_BR ro ru sv ta tr zh_CN zh_TW
-GETTEXT_FILES	:= pg_controldata.c
-GETTEXT_TRIGGERS:= _
+CATALOG_NAME     = pg_controldata
+AVAIL_LANGUAGES  = de es fr it ja ko pt_BR ro ru sv ta tr zh_CN zh_TW
+GETTEXT_FILES    = pg_controldata.c
+GETTEXT_TRIGGERS = _

src/bin/pg_ctl/nls.mk

 # src/bin/pg_ctl/nls.mk
-CATALOG_NAME	:= pg_ctl
-AVAIL_LANGUAGES	:= de es fr it ja ko pt_BR ru sv ta tr zh_CN zh_TW
-GETTEXT_FILES	:= pg_ctl.c ../../port/exec.c
-GETTEXT_TRIGGERS:= _
+CATALOG_NAME     = pg_ctl
+AVAIL_LANGUAGES  = de es fr it ja ko pt_BR ru sv ta tr zh_CN zh_TW
+GETTEXT_FILES    = pg_ctl.c ../../port/exec.c
+GETTEXT_TRIGGERS = _

src/bin/pg_dump/nls.mk

 # src/bin/pg_dump/nls.mk
-CATALOG_NAME	:= pg_dump
-AVAIL_LANGUAGES	:= de es fr it ja ko pt_BR sv tr zh_CN zh_TW
-GETTEXT_FILES	:= pg_dump.c common.c pg_backup_archiver.c pg_backup_custom.c \
+CATALOG_NAME     = pg_dump
+AVAIL_LANGUAGES  = de es fr it ja ko pt_BR sv tr zh_CN zh_TW
+GETTEXT_FILES    = pg_dump.c common.c pg_backup_archiver.c pg_backup_custom.c \
                    pg_backup_db.c pg_backup_files.c pg_backup_null.c \
                    pg_backup_tar.c pg_restore.c pg_dumpall.c \
                    ../../port/exec.c
-GETTEXT_TRIGGERS:= write_msg:2 die_horribly:3 exit_horribly:3 simple_prompt \
+GETTEXT_TRIGGERS = write_msg:2 die_horribly:3 exit_horribly:3 simple_prompt \
                    ExecuteSqlCommand:3 ahlog:3 _

src/bin/pg_resetxlog/nls.mk

 # src/bin/pg_resetxlog/nls.mk
-CATALOG_NAME	:= pg_resetxlog
-AVAIL_LANGUAGES	:= de es fr it ja ko pt_BR ro ru sv ta tr zh_CN zh_TW
-GETTEXT_FILES	:= pg_resetxlog.c
-GETTEXT_TRIGGERS:= _
+CATALOG_NAME     = pg_resetxlog
+AVAIL_LANGUAGES  = de es fr it ja ko pt_BR ro ru sv ta tr zh_CN zh_TW
+GETTEXT_FILES    = pg_resetxlog.c
+GETTEXT_TRIGGERS = _

src/bin/psql/nls.mk

 # src/bin/psql/nls.mk
-CATALOG_NAME	:= psql
-AVAIL_LANGUAGES	:= cs de es fr ja pt_BR sv tr zh_CN zh_TW
-GETTEXT_FILES	:= command.c common.c copy.c help.c input.c large_obj.c \
+CATALOG_NAME     = psql
+AVAIL_LANGUAGES  = cs de es fr ja pt_BR sv tr zh_CN zh_TW
+GETTEXT_FILES    = command.c common.c copy.c help.c input.c large_obj.c \
                    mainloop.c print.c startup.c describe.c sql_help.h sql_help.c \
                    ../../port/exec.c
-GETTEXT_TRIGGERS:= _ N_ psql_error simple_prompt
+GETTEXT_TRIGGERS = _ N_ psql_error simple_prompt

src/bin/scripts/nls.mk

 # src/bin/scripts/nls.mk
-CATALOG_NAME    := pgscripts
-AVAIL_LANGUAGES := cs de es fr it ja ko pt_BR ro sv ta tr zh_CN zh_TW
-GETTEXT_FILES   := createdb.c createlang.c createuser.c \
+CATALOG_NAME     = pgscripts
+AVAIL_LANGUAGES  = cs de es fr it ja ko pt_BR ro sv ta tr zh_CN zh_TW
+GETTEXT_FILES    = createdb.c createlang.c createuser.c \
                    dropdb.c droplang.c dropuser.c \
                    clusterdb.c vacuumdb.c reindexdb.c \
                    common.c
-GETTEXT_TRIGGERS:= _ simple_prompt yesno_prompt
+GETTEXT_TRIGGERS = _ simple_prompt yesno_prompt

src/interfaces/ecpg/ecpglib/nls.mk

 # src/interfaces/ecpg/ecpglib/nls.mk
-CATALOG_NAME	 = ecpglib
-AVAIL_LANGUAGES	 = de es fr it ja pt_BR tr zh_CN
-GETTEXT_FILES	 = connect.c error.c execute.c misc.c
+CATALOG_NAME     = ecpglib
+AVAIL_LANGUAGES  = de es fr it ja pt_BR tr zh_CN
+GETTEXT_FILES    = connect.c error.c execute.c misc.c
 GETTEXT_TRIGGERS = ecpg_gettext

src/interfaces/ecpg/preproc/nls.mk

 # src/interfaces/ecpg/preproc/nls.mk
-CATALOG_NAME	 = ecpg
-AVAIL_LANGUAGES	 = de es fr it ja ko pt_BR tr zh_CN zh_TW
-GETTEXT_FILES	 = descriptor.c ecpg.c pgc.c preproc.c type.c variable.c
+CATALOG_NAME     = ecpg
+AVAIL_LANGUAGES  = de es fr it ja ko pt_BR tr zh_CN zh_TW
+GETTEXT_FILES    = descriptor.c ecpg.c pgc.c preproc.c type.c variable.c
 GETTEXT_TRIGGERS = _ mmerror:3

src/interfaces/libpq/nls.mk

 # src/interfaces/libpq/nls.mk
-CATALOG_NAME	:= libpq
-AVAIL_LANGUAGES	:= cs de es fr it ja ko pt_BR ru sv ta tr zh_CN zh_TW
-GETTEXT_FILES	:= fe-auth.c fe-connect.c fe-exec.c fe-lobj.c fe-misc.c fe-protocol2.c fe-protocol3.c fe-secure.c
-GETTEXT_TRIGGERS:= libpq_gettext pqInternalNotice:2
+CATALOG_NAME     = libpq
+AVAIL_LANGUAGES  = cs de es fr it ja ko pt_BR ru sv ta tr zh_CN zh_TW
+GETTEXT_FILES    = fe-auth.c fe-connect.c fe-exec.c fe-lobj.c fe-misc.c fe-protocol2.c fe-protocol3.c fe-secure.c
+GETTEXT_TRIGGERS = libpq_gettext pqInternalNotice:2

src/pl/plperl/nls.mk

 # src/pl/plperl/nls.mk
-CATALOG_NAME	:= plperl
-AVAIL_LANGUAGES	:= de es fr it ja pt_BR ro tr zh_CN zh_TW
-GETTEXT_FILES	:= plperl.c SPI.c
-GETTEXT_TRIGGERS:= errmsg errmsg_plural:1,2 errdetail errdetail_log errdetail_plural:1,2 errhint errcontext
+CATALOG_NAME     = plperl
+AVAIL_LANGUAGES  = de es fr it ja pt_BR ro tr zh_CN zh_TW
+GETTEXT_FILES    = plperl.c SPI.c
+GETTEXT_TRIGGERS = errmsg errmsg_plural:1,2 errdetail errdetail_log errdetail_plural:1,2 errhint errcontext

src/pl/plpgsql/src/nls.mk

 # src/pl/plpgsql/src/nls.mk
-CATALOG_NAME	:= plpgsql
-AVAIL_LANGUAGES	:= de es fr it ja ko pt_BR ro zh_CN zh_TW
-GETTEXT_FILES	:= pl_comp.c pl_exec.c pl_gram.c pl_funcs.c pl_handler.c pl_scanner.c
-GETTEXT_TRIGGERS:= _ errmsg errmsg_plural:1,2 errdetail errdetail_log errdetail_plural:1,2 errhint errcontext yyerror plpgsql_yyerror
+CATALOG_NAME     = plpgsql
+AVAIL_LANGUAGES  = de es fr it ja ko pt_BR ro zh_CN zh_TW
+GETTEXT_FILES    = pl_comp.c pl_exec.c pl_gram.c pl_funcs.c pl_handler.c pl_scanner.c
+GETTEXT_TRIGGERS = _ errmsg errmsg_plural:1,2 errdetail errdetail_log errdetail_plural:1,2 errhint errcontext yyerror plpgsql_yyerror

src/pl/plpython/nls.mk

 # src/pl/plpython/nls.mk
-CATALOG_NAME	:= plpython
-AVAIL_LANGUAGES	:= de es fr it ja pt_BR ro tr zh_CN zh_TW
-GETTEXT_FILES	:= plpython.c
-GETTEXT_TRIGGERS:= errmsg errmsg_plural:1,2 errdetail errdetail_log errdetail_plural:1,2 errhint errcontext PLy_elog:2 PLy_exception_set:2 PLy_exception_set_plural:2,3
+CATALOG_NAME     = plpython
+AVAIL_LANGUAGES  = de es fr it ja pt_BR ro tr zh_CN zh_TW
+GETTEXT_FILES    = plpython.c
+GETTEXT_TRIGGERS = errmsg errmsg_plural:1,2 errdetail errdetail_log errdetail_plural:1,2 errhint errcontext PLy_elog:2 PLy_exception_set:2 PLy_exception_set_plural:2,3

src/pl/tcl/nls.mk

 # src/pl/tcl/nls.mk
-CATALOG_NAME	:= pltcl
-AVAIL_LANGUAGES	:= de es fr it ja pt_BR ro tr zh_CN zh_TW
-GETTEXT_FILES	:= pltcl.c
-GETTEXT_TRIGGERS:= errmsg errmsg_plural:1,2 errdetail errdetail_log errdetail_plural:1,2 errhint errcontext
+CATALOG_NAME     = pltcl
+AVAIL_LANGUAGES  = de es fr it ja pt_BR ro tr zh_CN zh_TW
+GETTEXT_FILES    = pltcl.c
+GETTEXT_TRIGGERS = errmsg errmsg_plural:1,2 errdetail errdetail_log errdetail_plural:1,2 errhint errcontext