Merge branch 'develop3d' of https://github.com/mono/MonoGame into develop3d
Merge branch 'develop3d' into FontProcessor
Merge branch 'develop3d' of https://github.com/mono/MonoGame into develop3d
Merge branch 'develop3d' into FontProcessor
Merge branch 'develop3d' of https://github.com/mono/MonoGame into develop3d
Fixing incorrect using for MONOMAC build
Merge pull request #1268 from Aranda/fix_macos_build

Fix MONOMAC build by adding missing using statement
Progress on DXT compression.
Submodule update.
Song.FilePath now an absolute path on desktop and Windows Store systems.
Song.Position and Song.FilePath are now internal as they are not part of XNA.
Added song support for Windows DX desktop builds.
Merge branch 'develop3d' into windesktop
Now works with AnyCPU setting.
Merge branch 'develop3d' into FontProcessor
Pointing to new ThirdParty/Libs checkout.
Updating references to .dlls.
DXTDataHandler is no longer a public class.
Throwing an exception for platforms that don't yet support texture compression.
Defining WINDOWS for Windows MGCB build.
#ifdefed around SetDLLDirectory until we come up with a solution for other platforms..
Merge pull request #1273 from SickheadGames/FontProcessor

DXT Compression implemented
Errors now go to stderr.