Clean up Makefiles - shouldn't require configure *.in Makefiles, as they should

pull their data/info from Makefile.global

src/interfaces/ecpg/include/Makefile.in

-SRCDIR= ../../..
-include $(SRCDIR)/Makefile.global
-
-all clean::
-	@echo Nothing to be done.
-
-install::
-	install ecpglib.h $(DESTDIR)$(HEADERDIR)	
-	install ecpgtype.h $(DESTDIR)$(HEADERDIR)	
-	install sqlca.h $(DESTDIR)$(HEADERDIR)	
-
-uninstall::
-	rm -f $(DESTDIR)$(HEADERDIR)/ecpglib.h
-	rm -f $(DESTDIR)$(HEADERDIR)/ecpgtype.h
-	rm -f $(DESTDIR)$(HEADERDIR)/sqlca.h

src/interfaces/ecpg/preproc/Makefile

@@ -6,12 +6,6 @@ MAJOR_VERSION=0
 MINOR_VERSION=5
 PATCHLEVEL=1
 
-CC=gcc
-LEX=flex
-LEXLIB=-lfl
-YACC=/usr/bin/bison
-YFLAGS=-y -d
-
 CFLAGS=-I../include -O2 -g -Wall -DMAJOR_VERSION=$(MAJOR_VERSION) -DMINOR_VERSION=$(MINOR_VERSION) -DPATCHLEVEL=$(PATCHLEVEL)
 
 all:: ecpg

src/interfaces/ecpg/preproc/Makefile.in

-SRCDIR= ../../..
-include $(SRCDIR)/Makefile.global
-
-MAJOR_VERSION=0
-MINOR_VERSION=5
-PATCHLEVEL=1
-
-CC=@CC@
-LEX=@LEX@
-LEXLIB=@LEXLIB@
-YACC=@YACC@
-YFLAGS=@YFLAGS@
-
-CFLAGS=-I../include -O2 -g -Wall -DMAJOR_VERSION=$(MAJOR_VERSION) -DMINOR_VERSION=$(MINOR_VERSION) -DPATCHLEVEL=$(PATCHLEVEL)
-
-all:: ecpg
-
-clean:
-	rm -f *.o core a.out ecpg preproc.tab.h y.tab.c *~
-
-install: all
-	install -c -m 755 ecpg $(DESTDIR)$(BINDIR)
-
-uninstall:
-	rm -f $(DESTDIR)$(BINDIR)/ecpg
-
-# Rule that really do something.
-ecpg: y.tab.o pgc.o type.o ecpg.o ../lib/typename.o
-	$(CC) -g -O2 -Wall -o ecpg y.tab.o pgc.o type.o ecpg.o ../lib/typename.o $(LEXLIB)
-
-y.tab.h y.tab.c: preproc.y
-	$(YACC) $(YFLAGS) $<
-
-y.tab.o : y.tab.h ../include/ecpgtype.h
-type.o : ../include/ecpgtype.h
-pgc.o : ../include/ecpgtype.h