directxtex: Install license file.
d3dretrace: Silence false pitch mismatches warnings on D3D11.
specs: Add DXGI 1.3 specs.
specs: Add some missing D3D11_RESOURCE_MISC_* flags.
specs: s/returnedInterface/ReturnedInterface/

For consistency with the original OpenSharedResource method.
d3dretrace: Accommodate sligthly different IID in OpenSharedResource.

e.g., ID3D11Device::OpenSharedResource(IID_D3D10Texture2D)