ffi.c (ffi_prep_closure): Set T bit in trampoline for the function returning a structure pointed with R2.

	* src/sh/ffi.c (ffi_prep_closure): Set T bit in trampoline for
	the function returning a structure pointed with R2.
	* src/sh/sysv.S (ffi_closure_SYSV): Use R2 as the pointer to
	the structure return value if T bit set.  Emit position
	independent code and EH data if PIC.

From-SVN: r89254