Change the ARM fixup code to handle the use of the following...

Change the ARM fixup code to handle the use of the following
instruction sequence for jumps:

  mov(ip, Operand(target, rmode), LeaveCC, cond);
  bx(ip, cond)

Changed a JS call in the compare stub to a tail call to avoid GC
problems where the pushed return address is not updated on GC.

Committed: http://code.google.com/p/v8/source/detail?r=3582

[Erik Corry, 2010-01-12 11:48:06]

LGTM