Bigly refactor of SyncProject script!
* If project file is not on disk will now attempt to find it in P4 (e.g no need to sync a project before you can sync a project).
*Added -projectonly option to skip updating of Engine dir (useful with -force when you've deleted files..)
* Changed default of maxwait to 0 based on new understanding of how this functions.
* Now works when the project is in a different P4 depot than the engine
[at]ben.marsh
#ROBOMERGE-SOURCE: CL 7688001 via CL 7688013 via CL 7688019 via CL 7690526
#ROBOMERGE-BOT: (v383-7686620)
[CL 7690676 by andrew grant in Main branch]
Added BuildTarget script that can builds specified targets for a project
Added OpenEditor utility script
[FYI] ben.marsh
#ROBOMERGE-SOURCE: CL 7553441 via CL 7553450 via CL 7568654
#ROBOMERGE-BOT: (v372-7473910)
[CL 7569064 by andrew grant in Main branch]