Updates to MRT extension.

Trac #21120

    01/30/2013  dgkoch  add issue 6 and clear interactions
                        renamed to EXT_draw_buffers based on feedback
                        changed resolution of issue 3.

git-svn-id: https://angleproject.googlecode.com/svn/branches/dx11proto@1812 736b8ea6-26fd-11df-bfd4-992fa37f6226
1 file changed