vdpauinfo: remove TODO regarding INVALID_CHROMA_TYPE when querying 444

This was a bug in the NVIDIA driver that was fixed in the 256.44 release with
the following changelog entry:

    * Fixed VDPAU to not print a debug error message when calling
      VdpVideoMixerQueryFeatureSupport with an unsupported or unknown
      VdpVideoMixerFeature.

Signed-off-by: Aaron Plattner <aplattner@nvidia.com>
Reviewed-by: José Hiram Soltren <jsoltren@nvidia.com>
vdpauinfo: remove is_supported initializers

These variables were initialized to work around a bug in the NVIDIA driver where
the is_supported output parameter was only initialized if the feature being
queried was not supported.  This was fixed in the 190.* driver release series,
making the workaround unnecessary.

Signed-off-by: Aaron Plattner <aplattner@nvidia.com>
Reviewed-by: José Hiram Soltren <jsoltren@nvidia.com>
Bump version to 0.1

I'd like to finish dealing with the TODO items in vdpauinfo.cpp before declaring
this 1.0.

Signed-off-by: Aaron Plattner <aplattner@nvidia.com>