commit russell's menuselect/buildoptions work with some changes:

commit russell's menuselect/buildoptions work with some changes:
  reverted per-directory .cleancount support
  added ability for 'remove_on_change' to support multiple filenames
  add 'remove_on_change' support to members, not just categories
  only do 'remove_on_change' removals if the config is actually saved
  add a 'remove_on_change' entry for each module found by prep_moduledeps so that if it gets turned off any existing .o/.so files will disappear

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@34577 65c4cc65-6c06-0410-ace0-fbb531ad65f3