* src/java_raw_api.c (ffi_java_raw_size): Handle FFI_TYPE_DOUBLE
	correctly.
	* src/ia64/unix.S: Add unwind information. Fix comments.
	Save sp in a way that's compatible with unwind info.
	(ffi_call_unix): Correctly restore sp in all cases.
	* src/ia64/ffi.c: Add, fix comments.

From-SVN: r52048