Avoid warning in "make tags".
* Makefile.in (TAGS): Avoid warning from etags when $GDB_NM_FILE is empty. See http://sourceware.org/ml/gdb-patches/2012-08/msg00504.html and http://sourceware.org/ml/gdb-patches/2013-04/msg00055.html for details of the problem.
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@ -1,3 +1,10 @@
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2013-04-05 Eli Zaretskii <eliz@gnu.org>
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* Makefile.in (TAGS): Avoid warning from etags when $GDB_NM_FILE is
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empty. See http://sourceware.org/ml/gdb-patches/2012-08/msg00504.html
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and http://sourceware.org/ml/gdb-patches/2013-04/msg00055.html for
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details of the problem.
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2013-04-04 Pedro Alves <palves@redhat.com>
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Hui Zhu <hui@codesourcery.com>
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@ -1208,7 +1208,7 @@ gdb1$(EXEEXT): gdb$(EXEEXT)
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GDB_NM_FILE = @GDB_NM_FILE@
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TAGS: $(TAGFILES_NO_SRCDIR) $(TAGFILES_WITH_SRCDIR)
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@echo Making TAGS
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@etags $(srcdir)/$(GDB_NM_FILE) \
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etags `(test -n "$(GDB_NM_FILE)" && echo "$(srcdir)/$(GDB_NM_FILE)")` \
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`(for i in $(DEPFILES) $(TAGFILES_NO_SRCDIR); do \
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echo $(srcdir)/$$i ; \
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done ; for i in $(TAGFILES_WITH_SRCDIR); do \
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