Fix ‘make clean’ with a file named ‘-.o’

Problem reported by T.V Raman in:
https://lists.gnu.org/r/emacs-devel/2018-09/msg00866.html
* Makefile.in (clean, extraclean):
* doc/emacs/Makefile.in (mostlyclean):
* doc/lispintro/Makefile.in (mostlyclean):
* doc/lispref/Makefile.in (mostlyclean):
* doc/misc/Makefile.in (mostlyclean, clean):
* etc/refcards/Makefile (clean):
* lib-src/Makefile.in (mostlyclean, extraclean):
* lib/Makefile.in (clean):
* lwlib/Makefile.in (clean mostlyclean):
* oldXMenu/Makefile.in (clean mostlyclean):
* src/Makefile.in (mostlyclean, extraclean):
* test/Makefile.in (mostlyclean):
Say ‘rm ./*.o’ instead of ‘rm *.o’ to avoid undesirable failure
when a file name begins with ‘-’.

1 files changed, 2 insertions, 2 deletions

diff --git a/lib-src/Makefile.in b/lib-src/Makefile.in
index b2b901788a5..ecb9208a1cd 100644
--- a/lib-src/Makefile.in
+++ b/lib-src/Makefile.in
@@ -334,7 +334,7 @@ uninstall:
         fi
 
 mostlyclean:
-        rm -f core *.o *.res
+        rm -f core ./*.o ./*.res
 
 clean: mostlyclean
         rm -f ${EXE_FILES}
@@ -345,7 +345,7 @@ distclean: clean
 bootstrap-clean maintainer-clean: distclean
 
 extraclean: maintainer-clean
-        rm -f *~ \#*
+        rm -f ./*~ \#*
 
 ## Test the contents of the directory.
 check: