"accel" mode: changed mapping of /usr/bin/host-*
"accel" mode: changed mapping of /usr/bin/host-*

- Prefix "/usr/bin/host-" will be mapped to the tools rootstrap,
  if the destination exists there. the default is still to leave it
  unmapped.

BinChengfei/scratchbox2,h113331pp/scratchbox2,ldbox/ldbox,h113331pp/scratchbox2,h113331pp/scratchbox2,loganchien/scratchbox2,lbt/scratchbox2,madscientist42/scratchbox2,h113331pp/scratchbox2,ldbox/ldbox,h113331pp/scratchbox2,lbt/scratchbox2,loganchien/scratchbox2,lbt/scratchbox2,OlegGirko/ldbox,OlegGirko/ldbox,ldbox/ldbox,madscientist42/scratchbox2,BinChengfei/scratchbox2,BinChengfei/scratchbox2,BinChengfei/scratchbox2,madscientist42/scratchbox2,OlegGirko/ldbox,madscientist42/scratchbox2,BinChengfei/scratchbox2,loganchien/scratchbox2,ldbox/ldbox,lbt/scratchbox2,BinChengfei/scratchbox2,OlegGirko/ldbox,h113331pp/scratchbox2,ldbox/ldbox,OlegGirko/ldbox,ldbox/ldbox,lbt/scratchbox2,madscientist42/scratchbox2,loganchien/scratchbox2,loganchien/scratchbox2,loganchien/scratchbox2,OlegGirko/ldbox,madscientist42/scratchbox2