* src/powerpc/sysv.S (smst_two_register): Don't call __ashldi3,
	instead do the shifting inline.
	* src/powerpc/ppc_closure.S (ffi_closure_SYSV): Don't compute %r5
	shift count unconditionally.  Simplify load sequences for 1, 2, 3, 4
	and 8 byte structs, for the remaining struct sizes don't call
	__lshrdi3, instead do the shifting inline.

From-SVN: r109879