Add support for a bunch of DRM Ioctls.  Fixes #207815.
(Robert Bragg, bob@o-hand.com)


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13486 a5019735-40e9-0310-863c-91ae7b9d1cf9
Fix fallout from r13486: "virtual" is a C++ reserved word and so this
header causes breakage in the C++ tests in the tree.  Rename it.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13487 a5019735-40e9-0310-863c-91ae7b9d1cf9