Use consistent spacing for PGAPPICON Makefile option.

contrib/oid2name/Makefile

 # contrib/oid2name/Makefile
 
 PGFILEDESC = "oid2name - examine the file structure"
-PGAPPICON=win32
+PGAPPICON = win32
 
 PROGRAM = oid2name
 OBJS	= oid2name.o

contrib/pg_archivecleanup/Makefile

 # contrib/pg_archivecleanup/Makefile
 
 PGFILEDESC = "pg_archivecleanup - cleans archive when used with streaming replication"
-PGAPPICON=win32
+PGAPPICON = win32
 
 PROGRAM = pg_archivecleanup
 OBJS	= pg_archivecleanup.o

contrib/pg_standby/Makefile

 # contrib/pg_standby/Makefile
 
 PGFILEDESC = "pg_standby - supports creation of a warm standby"
-PGAPPICON=win32
+PGAPPICON = win32
 
 PROGRAM = pg_standby
 OBJS	= pg_standby.o

contrib/pgbench/Makefile

 # contrib/pgbench/Makefile
 
 PGFILEDESC = "pgbench - a simple program for running benchmark tests"
-PGAPPICON=win32
+PGAPPICON = win32
 
 PROGRAM = pgbench
 OBJS	= pgbench.o

contrib/vacuumlo/Makefile

 # contrib/vacuumlo/Makefile
 
 PGFILEDESC = "vacuumlo - removes orphaned large objects"
-PGAPPICON=win32
+PGAPPICON = win32
 
 PROGRAM = vacuumlo
 OBJS	= vacuumlo.o