patch 8.1.1149: building desktop files fails with older msgfmt

Problem:    Building desktop files fails with older msgfmt.
Solution:   Add autoconf check.  Avoid always building the desktop files.

src/auto/configure

@@ -623,6 +623,7 @@ ac_subst_vars='LTLIBOBJS
 LIBOBJS
 LINK_AS_NEEDED
 DEPEND_CFLAGS_FILTER
+MSGFMT_DESKTOP
 MAKEMO
 MSGFMT
 INSTALL_TOOL_LANGS
@@ -14533,6 +14534,18 @@ $as_echo "no" >&6; }
 fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext conftest.$ac_ext
+      { $as_echo "$as_me:${as_lineno-$LINENO}: checking if msgfmt supports --desktop" >&5
+$as_echo_n "checking if msgfmt supports --desktop... " >&6; }
+      MSGFMT_DESKTOP=
+      if "$MSGFMT" --help | grep -e '--desktop' >/dev/null; then
+	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+	MSGFMT_DESKTOP="gvim.desktop vim.desktop"
+      else
+	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+      fi
+
     fi
   else
     { $as_echo "$as_me:${as_lineno-$LINENO}: result: no \"po/Makefile\" - disabled" >&5

src/config.mk.in

@@ -169,6 +169,7 @@ OS_EXTRA_OBJ	= @OS_EXTRA_OBJ@
 MAKEMO		= @MAKEMO@
 
 MSGFMT		= @MSGFMT@
+MSGFMT_DESKTOP	= @MSGFMT_DESKTOP@
 
 # Make sure that "make first" will run "make all" once configure has done its
 # work.  This is needed when using the Makefile in the top directory.

src/configure.ac

@@ -4298,6 +4298,15 @@ if test "$enable_nls" = "yes"; then
 		[++_nl_msg_cat_cntr;],
 		AC_MSG_RESULT([yes]); AC_DEFINE(HAVE_NL_MSG_CAT_CNTR),
 		AC_MSG_RESULT([no]))
+      AC_MSG_CHECKING([if msgfmt supports --desktop])
+      MSGFMT_DESKTOP=
+      if "$MSGFMT" --help | grep -e '--desktop' >/dev/null; then
+	AC_MSG_RESULT([yes])
+	MSGFMT_DESKTOP="gvim.desktop vim.desktop"
+      else
+	AC_MSG_RESULT([no])
+      fi
+      AC_SUBST(MSGFMT_DESKTOP)
     fi
   else
     AC_MSG_RESULT([no "po/Makefile" - disabled]);

src/po/Make_all.mak

@@ -45,6 +45,49 @@ LANGUAGES = \
 		zh_TW.UTF-8 \
 
 
+POFILES = \
+		af.po \
+		ca.po \
+		cs.po \
+		cs.cp1250.po \
+		da.po \
+		de.po \
+		en_GB.po \
+		eo.po \
+		es.po \
+		fi.po \
+		fr.po \
+		ga.po \
+		it.po \
+		ja.po \
+		ja.euc-jp.po \
+		ja.sjis.po \
+		ko.po \
+		ko.UTF-8.po \
+		lv.po \
+		nb.po \
+		nl.po \
+		no.po \
+		pl.po \
+		pl.UTF-8.po \
+		pl.cp1250.po \
+		pt_BR.po \
+		ru.po \
+		ru.cp1251.po \
+		sk.po \
+		sk.cp1250.po \
+		sr.po \
+		sv.po \
+		uk.po \
+		uk.cp1251.po \
+		vi.po \
+		zh_CN.po \
+		zh_CN.UTF-8.po \
+		zh_CN.cp936.po \
+		zh_TW.po \
+		zh_TW.UTF-8.po \
+
+
 MOFILES = \
 		af.mo \
 		ca.mo \

src/po/Makefile

@@ -25,9 +25,6 @@ MSGMERGE = OLD_PO_FILE_INPUT=yes OLD_PO_FILE_OUTPUT=yes msgmerge
 .SUFFIXES: .po .mo .pot .ck
 .PHONY: all install uninstall prefixcheck converted check clean checkclean distclean update-po $(LANGUAGES)
 
-LINGUAS:
-	@echo $(LANGUAGES) | tr " " "\n" |sed -e '/\./d' | sort > LINGUAS
-
 .po.mo:
 	$(MSGFMTCMD) -o $@ $<
 
@@ -35,7 +32,7 @@ LINGUAS:
 	$(VIM) -u NONE -e -X -S check.vim -c "if error == 0 | q | endif" -c cq $<
 	touch $@
 
-all: $(MOFILES) $(MOCONVERTED) gvim.desktop vim.desktop
+all: $(MOFILES) $(MOCONVERTED) $(MSGFMT_DESKTOP)
 
 check: $(CHECKFILES)
 
@@ -167,7 +164,7 @@ $(PACKAGE).pot: ../*.c ../if_perl.xs ../GvimExt/gvimext.cpp ../globals.h ../if_p
 		po/gvim.desktop.in po/vim.desktop.in
 	mv -f ../$(PACKAGE).po $(PACKAGE).pot
 
-%.desktop: %.desktop.in $(PACKAGE).pot LINGUAS
+%.desktop: %.desktop.in $(POFILES)
 	$(MSGFMT) --desktop -d . --template $< -o $@
 	cp -f $@ ../../runtime/$@
 

src/version.c

@@ -771,6 +771,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1149,
 /**/
     1148,
 /**/