Original commit message from CVS:
Don't delete CVS directories from working directory: delete from distdir.
Also, delete backup files, while you're at it. :)
EXTRA_DIST = random slides manuals.mak
dist-hook:
- $(RM) -rf random/CVS
- $(RM) -rf slides/CVS
+ $(RM) -rf $(distdir)/random/CVS
+ $(RM) -rf $(distdir)/random/*~
+ $(RM) -rf $(distdir)/random/.\#*
+ $(RM) -rf $(distdir)/slides/CVS
+ $(RM) -rf $(distdir)/slides/*~
+ $(RM) -rf $(distdir)/slides/.\#*