* config/h8300/h8300.md (extendqisi2): Change to an expander.

	(*extendqisi2_h8300): New.
	(*extendqisi2_h8300hs): Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@63104 138bc75d-0d04-0410-961f-82ee72b054a4