ARM stack alignment on hand called functions

[Kris Warkentin]

> > OK, but with this change the alignment is being done *after* any
arguments
> > that have to go onto the stack have been pushed.  It should happen
> > *before*.  What happens if you have?

You're right.  If I put the "sp = (sp + 3) & ~3" at the top of
arm_push_arguments(), everything works.  I see that a lot of stuff in
arm-tdep.c has been changed extensively on your head branch, including
arm_push_arguments().  Probably once we move to the head branch, everything
will work fine.

cheers,

Kris