Get rid of manual pages which aren't used.

This is a partial correction to the original fix for bug#37098
   Get rid of "Installed (but unpackaged)" files in the RPM build
which used a wrong variable.

man/Makefile.am:
  Correction to the original fix:
  The variable to use is "$(mandir)", "$(manlibdir)" was wrong.

man/Makefile.am

@@ -24,8 +24,8 @@ EXTRA_DIST =  $(man1_MANS) $(man8_MANS)
 # 1) not needed in Unix binary packages,
 # 2) programs not generated in 5.0:
 install-data-hook:
-	rm -f $(DESTDIR)$(manlibdir)/man1/make_win_*
-	rm -f $(DESTDIR)$(manlibdir)/man1/ndb_print_*
+	rm -f $(DESTDIR)$(mandir)/man1/make_win_*
+	rm -f $(DESTDIR)$(mandir)/man1/ndb_print_*
 
 # Don't update the files from bitkeeper
 %::SCCS/s.%