Necessary for using a distributed compiler on OS X. Updated for recent changes that caused more preprocess problems.
#codereview michael.trepka, jack.porter
[CL 2072853 by Mark Satterthwaite in Main branch]
#ttp 331898 EDITOR: Update Perforce SDK to Visual Studio 2013 compatible libraries
#note This a re-submission of the previous CL 2048699 minus the SSL lib changes that were causing problems for people with different SSL-enabled installed programs.
#add Added new Perforce API libraries & includes for version 2014.2.
#remove Deprecated the loading of the P4API.dll - we no longer use this in the Editor (however it must remain as it is used in the build system).
#fix Fixed source control tests to properly create temporary packages.
reviewed by Andrew.Brown
[CL 2049736 by Thomas Sarkanen in Main branch]
#ttp 331898 EDITOR: Update Perforce SDK to Visual Studio 2013 compatible libraries
#ttp 331132 LIVE: Editor: Source Control: Request to support SSL connections to Perforce servers
#add Added new Perforce API libraries & includes for version 2014.2.
#add Added OpenSSL 1.0.1g alongside the new Perforce libs & updated build script to link against them, rather than the stub.
#remove Deprecated the loading of the P4API.dll - we no longer use this in the Editor (however it must remain as it is used in the build system).
#fix Fixed source control tests to properly create temporary packages.
reviewed by Andrew.Brown
[CL 2048699 by Thomas Sarkanen in Main branch]
