this set of changes fixes issue # 10643 by keeping track of the last object defined...

this set of changes fixes issue # 10643 by keeping track of the last object defined in a file, and attaching any accumulated comments to that object (category header or variable declaration). The file_save routine also had to be upgraded to output these trailing comments. Config.h was modified to include the trailing comment list on categories and variables.

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@81519 65c4cc65-6c06-0410-ace0-fbb531ad65f3