merge xf86-video-ast 1.1.5

Remove merge artifact.

merge xf86-video- ast 1.0.1, cirrus 1.5.3, geode 2.11.17, mach64 6.9.5,
savage 2.3.8 and siliconmotion 1.7.8.

move a extern decl into the scope it is used.

initial import of xf86-video-ast-0.98.0

initial import of xf86-video-ast-0.97.0

initial import of xf86-video-ast-0.93.9

initial import of xf86-video-ast-0.91.10

initial import of xf86-video-ast-0.89.9

initial import of xf86-video-ast-0.89.8

initial import of xf86-video-ast-0.81.0