Add support for a variable renaming map that ensures that variables are always renamed to be unique inside of a file.
Add support for a variable renaming map that ensures that variables are always renamed to be unique inside of a file.

[git-p4: change = 78397057]

youtube/spitfire,spt/spitfire,nicksay/spitfire,youtube/spitfire,spt/spitfire,nicksay/spitfire,nicksay/spitfire,spt/spitfire,nicksay/spitfire,youtube/spitfire,youtube/spitfire,spt/spitfire