* Lots of code moved into IDesktopPlatform for sharing with Launcher and Mac (including setting up file associations, querying project versions, etc...)
* Hack to enumerate all the known launcher engine installations. Does not use registry keys any more. Will probably change to use a list of installations generated by the launcher at some point soon.
* List of registered GitHub builds is stored in HKEY_CURRENT_USER
* Switching engine versions is now done through a dialog rather than through the context menu.
* VersionSelector includes a version number for shell integration, allowing it to defer to an existing installation of the same version if necessary.
#codereview Michael.Trepka
[CL 2045845 by Ben Marsh in Main branch]
#ios
* fix for looking for the All_iOS_On device which doesn't exist when wanting to deploy to all devices.
[CL 2045577 by Peter Sauerbrei in Main branch]
#add FClass and FClasses added to encapsulate (and ultimately replace) UClass and FClassTree.
#add StringUtils contains a bunch of string-related functions which were in FHeaderParser for no real reason.
#change Replaced FClassTree with UHT and fixed up all the code which was affected.
#codereview robert.manuszewski
[CL 2045258 by Steve Robb in Main branch]
Also, do not halve number of processors when running on mono (unnecessary generalization).
Part of pull request 49 by sbc, see https://github.com/EpicGames/UnrealEngine/pull/49 for details.
#codereview Ben.Marsh
[CL 2045177 by Dmitry Rekman in Main branch]
#proj UE4
#branch UE4
#summary Changed UBT and UHT exit codes to inform about compilation result. The editor is reading exit code of UBT process and changes output message informing if this is a failure due to header changes.
#codereview Robert.Manuszewski
[CL 2044928 by Jaroslaw Palczynski in Main branch]
- Project rules will now be stored in EngineSavedFolder when running non-installed UAT, otherwise in Temp/UAT/EscapedRoot folder
- Added CommandUtils.EscapePath utility function
- Moved DeleteDirectoryContents function from LocalBuildEnvironment to CommandUtils
- Added code to clean rules folder up on startup.
#codereview gil.gribb
[CL 2044393 by Robert Manuszewski in Main branch]
