SH: Miscellaneous mdfile fixes

[Joern Rennecke]

> 2001-07-18  Andrew Haley  <aph@cambridge.redhat.com>
> 
> 	* config/sh/sh.md (ashlsi3_std splitter): Split only after reload.
> 	(ashlsi3_n splitter): Likewise.
> 	(lshrsi3_n splitter): Likewise.
> 
> 	(GOTaddr2picreg): Make const SImode.
> 	(sym_label2reg): Likewise.
> 	(symGOT2reg): Likewise.
> 	(symGOTOFF2reg) Likewise.
> 
> 	(casesi_worker_0): Make unspec SImode.	

Ok.