Added a hint flag to prevent us from needing to perform whole-repo updates for every multi-file status update (such as those in the content browser). This also keeps the performance improvements we get form querying the workign copy root when 'Submit to source control...' is clicked.
Also added a temp fix for a crash when initializing the file list in the submit dialog where plugin content would not resolve package names correctly. Right now we just display the filename. A proper fix is hopefully incoming from Rob M (listed as UE-11493) which measn we can revert back to using package names.
From this UDN:
https://udn.unrealengine.com/questions/238672/potential-threading-issue-using-subversion-in-edit.html
UE-11466 - SVN status can take a very long time in certain circumstances, and possibly crash
[CL 2473604 by Thomas Sarkanen in Main branch]
TTP# 334923 - EDITOR: Perforce Integration (Move -> Delete + Add instead of Integrate)
New API: Added ISourceControlRevision::GetBranchSource.
Made sure the P4 and SVN providers perform integrates/copies so that history is maintained across file copies & moves.
Also fixed SCC icons not refreshing sometimes until source control operation has completed.
Added new branch icon.
Fixed date display in history.
This required some fairly nasty fixup to get it all working within the Editor copy code path, but the majority of the changes are in the source control providers.
reviewed by Andrew.Brown
[CL 2095604 by Thomas Sarkanen in Main branch]
