[TIMOB-17651] Updated code to fork the correct Titanium command as soon as the tiapp.xml is parsed. Also fixed bug where the pre-compiled headers were causing xcodebuild to error. Simply clean the project before each build.
Merge pull request #6036 from cb1kenobi/timob-17651_3_4_X

[TIMOB-17651] Updated code to fork the correct Titanium command as soon ...