Improved mapping of location of ahk script
Improved version control, wrapping, iifdef

* iifdef now removes #pragma once directives, puts directive at top of
file
* bugfix for SelectProjectConfig (reloads correctly)
* Now have wrap markers for auto-wrapped lines
* Normalizing version control commands across tools ,pdiff --> ,diff
* Now use :update rather than :w when checking out a file, etc