K 10
svn:author
V 7
rnoland
K 8
svn:date
V 27
2009-06-25T18:27:08.382846Z
K 7
svn:log
V 310
Some more cleanups for vblank code on Intel.

The Intel 2d driver calls modeset before reinstalling the handler on
a vt switch.  This means that vblank status ends up getting cleared
after it has been setup.  Restore saved values for the pipestat registers
rather than just wiping them out.

MFC after:	3 days

END