PLAY: decap source files.

Also deleted ^Zs at end of files.
PLAY: add include guard for jimk.h.
PLAY: remove xordot.
PLAY: remove getd.
PLAY: remove clipline.
PLAY: remove bsame.
PLAY: remove fsame.
PLAY: remove bcontrast.
PLAY: remove fcontrast.
PLAY: remove bcompare.
PLAY: remove fcompare.
PLAY: remove pollvstatus.
PLAY: remove cpoke.
PLAY: remove enorm_pointer.
PLAY: remove xor_words.
PLAY: remove xlat.
PLAY: remove back_scan.
Merge pull request #7 from wangds/play_prune

Remove unused asm in PLAY.