Patch to tidy x86 splitter register constraints

[Jeffrey A Law]

  In message < 199904081746.NAA28269@jwlab.FEITH.COM >you write:
  > This patch removes the unused register constraints from various splitters.
  > 
  > ChangeLog:
  > 
  > Thu Apr  8 05:24:27 EDT 1999  John Wehle  (john@feith.com)
  > 
  > 	* i386.md (floatsisf2, floatdisf2, floatsidf2, floatdidf2,
  > 	floatsixf2, floatdixf2, movsicc, movhicc, movsfcc, movdfcc,
  > 	movxfcc, movdicc): Remove unused register constraints from
  > 	the splitters.
This is fine.  Please install it.  Thanks!

jeff