Remove maintainer-check target, fold into normal build

make maintainer-check was obscure and rarely called in practice, and
many breakages were missed.  Fold everything that make maintainer-check
used to do into the normal build.  Specifically:

- Call duplicate_oids when genbki.pl is called.

- Check for tabs in SGML files when the documentation is built.

- Run msgfmt with the -c option during the regular build.  Add an
  additional configure check to see whether we are using the GNU
  version.  (make maintainer-check probably used to fail with non-GNU
  msgfmt.)

Keep maintainer-check as around as phony target for the time being in
case anyone is calling it.  But it won't do anything anymore.

src/Makefile.global.in

@@ -18,11 +18,11 @@
 #
 # Meta configuration
 
-standard_targets = all install installdirs uninstall distprep clean distclean maintainer-clean coverage check installcheck maintainer-check init-po update-po
+standard_targets = all install installdirs uninstall distprep clean distclean maintainer-clean coverage check installcheck init-po update-po
 # these targets should recurse even into subdirectories not being built:
 standard_always_targets = distprep clean distclean maintainer-clean
 
-.PHONY: $(standard_targets) install-strip html man installcheck-parallel
+.PHONY: $(standard_targets) install-strip html man installcheck-parallel maintainer-check
 
 # make `all' the default target
 all:
@@ -283,6 +283,7 @@ perl_embed_ldflags	= @perl_embed_ldflags@
 AWK	= @AWK@
 LN_S	= @LN_S@
 MSGFMT  = @MSGFMT@
+MSGFMT_FLAGS = @MSGFMT_FLAGS@
 MSGMERGE = @MSGMERGE@
 PYTHON	= @PYTHON@
 TAR	= @TAR@

src/backend/catalog/Makefile

@@ -62,7 +62,8 @@ schemapg.h: postgres.bki ;
 # even in distribution tarballs.  So this is cheating a bit, but it
 # will achieve the goal of updating the version number when it
 # changes.
-postgres.bki: genbki.pl Catalog.pm $(POSTGRES_BKI_SRCS) $(top_srcdir)/configure
+postgres.bki: genbki.pl Catalog.pm $(POSTGRES_BKI_SRCS) $(top_srcdir)/configure $(top_srcdir)/src/include/catalog/duplicate_oids
+	cd $(top_srcdir)/src/include/catalog && ./duplicate_oids
 	$(PERL) -I $(catalogdir) $< $(pg_includes) --set-version=$(MAJORVERSION) $(POSTGRES_BKI_SRCS)
 
 .PHONY: install-data

src/backend/common.mk

@@ -45,4 +45,4 @@ clean: clean-local
 clean-local:
 	rm -f $(subsysfilename) $(OBJS)
 
-$(call recurse,coverage maintainer-check)
+$(call recurse,coverage)

src/include/Makefile

@@ -75,6 +75,3 @@ clean:
 
 distclean maintainer-clean: clean
 	rm -f pg_config.h pg_config_ext.h pg_config_os.h dynloader.h stamp-h stamp-ext-h
-
-maintainer-check:
-	cd catalog && ./duplicate_oids

src/nls-global.mk

@@ -68,7 +68,7 @@ BACKEND_COMMON_GETTEXT_FLAGS = \
 all-po: $(MO_FILES)
 
 %.mo: %.po
-	$(MSGFMT) -o $@ $<
+	$(MSGFMT) $(MSGFMT_FLAGS) -o $@ $<
 
 ifeq ($(word 1,$(GETTEXT_FILES)),+)
 po/$(CATALOG_NAME).pot: $(word 2, $(GETTEXT_FILES)) $(MAKEFILE_LIST)
@@ -113,12 +113,6 @@ clean-po:
 	rm -f po/$(CATALOG_NAME).pot
 
 
-maintainer-check-po: $(ALL_PO_FILES)
-	for file in $^; do \
-	  $(MSGFMT) -c -v -o /dev/null $$file || exit 1; \
-	done
-
-
 init-po: po/$(CATALOG_NAME).pot
 
 
@@ -155,7 +149,6 @@ install: install-po
 installdirs: installdirs-po
 uninstall: uninstall-po
 clean distclean maintainer-clean: clean-po
-maintainer-check: maintainer-check-po
 
 .PHONY: all-po install-po installdirs-po uninstall-po clean-po \
-        maintainer-check-po init-po update-po
+        init-po update-po