Script changes for building WinRT projects.
Fixing compile errors from freetype header when building for WinRT.
Setting output directories for WinPhone builds to fix build errors.
Don't output debugdir for WinRT builds, since it messes up the emulator.
Adding WinRT platform function and setting it to use multithreaded rendering.
Adding specialized codepaths for swapchain creation on WinRT, since it requires DXGI 1.3.
WinRT builds needs to static link against the D3D11 and DXGI libs.
Adding WinRT entrypoint for examples.
Merge pull request #179 from dariomanesku/master

Fixing imgui mouse scroll.
Merge branch 'master' of https://github.com/bkaradzic/bgfx
Updating name of winphone 8.1 toolset.
Fixing compile errors on MSVC.
Merge pull request #180 from MikePopoloski/master

Adding WinRT Support
Updated README.
Added 23-vectordisplay example.
Merge branch 'master' of github.com:bkaradzic/bgfx
Updated README.
Added 23-vectordisplay shaders and screenshot.
Cleanup.
Cleanup.