Reload patch for PA call rewrite.

[Jeff Law]

 In message <200211152205.gAFM5920015687@hiauly1.hia.nrc.ca>, "John David 
Anglin
" writes:
 >I have it from HP that there are no processors that implement the explicit
 >BTS opcodes described in the Kane book and that it is highly unlikely that
 >any future processors will have this feature.  However, there are PA
 >processors have a completely hardware managed BTS.
For the hardware managed BTS machines we should probably disable sibling
call optimizations as they'll scrog the BTS.

jeff