Move gcc_jit_result implementation to a new files jit-result.{h|c}

Move gcc_jit_result implementation to a new files jit-result.{h|c}

gcc/jit/ChangeLog:
	* Make-lang.in (jit_OBJS): Add jit/jit-result.o.
	* jit-playback.c: Include new header jit-result.h.
	(gcc::jit::result::result): Move to new file jit-result.c.
	(gcc::jit::result::~result): Likewise.
	(gcc::jit::playback::result): Likewise.
	* jit-recording.h (class gcc::jit::result): Move to new
	header jit-result.h.
	* jit-result.c: New file, to contain...
	(gcc::jit::result::result): Move here from jit-playback.c,
	removing erroneous "playback" namespace from comment.
	(gcc::jit::result::~result): Likewise.
	(gcc::jit::playback::result): Likewise.
	* jit-result.h: New file, to contain...
	(class gcc::jit::result): Move from jit-recording.h.
	* libgccjit.c: Include jit-result.h.
	(gcc_jit_result_get_code): Update comment to reflect move
	of implementation.
	(gcc_jit_result_release): Likewise.

From-SVN: r218236