ffi.c (ffi_prep_args): Take account into the alignement for the register size.

ffi.c (ffi_prep_args): Take account into the alignement for the register size.

	* src/sh/ffi.c (ffi_prep_args): Take account into the alignement
	for the register size.
	(ffi_closure_helper_SYSV): Handle the structure return value
	address correctly.
	(ffi_closure_helper_SYSV): Return the appropriate type when
	the registers are used for the structure return value.
	* src/sh/sysv.S (ffi_closure_SYSV): Fix the stack layout for
	the 64-bit return value.  Update copyright years.

From-SVN: r71521