* Project and plugin modules can now specify an array of supported programs in the "WhitelistPrograms" field of their module descriptors, to allow modules to be loaded by programs.
* Programs can now load any runtime modules, as long as they are whitelisted.
* Programs under the engine directory can now use a shared build environment, so that building with a project file does not cause output binaries to be output to the project directory.
* UnrealPak is now always built by default when packaging
* Convert UnrealPak to a modular configuration
#fyi Josh.Adams
#rb none
[CL 4216633 by Ben Marsh in Dev-Core branch]
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