Add proper def file for guest video driver now that it compiles. Put ifdef hack FAISALMEMON_S4_SGIMAGE around the reqhandlerextensionlib.mmp because this appears to be consuming a platform available sgresource header only available in s4. We want a minimal port for s3 here.

EXPORTS
	?New@CFbsRasterizer@@SAPAV1@XZ @ 1  NONAME ; class CFbsRasterizer * CFbsRasterizer::New(void)