Big cleanup of bin/, move external programs to contrib/, move minor useful scripts to aux/, and most important of all move controller.rc to werc.rc

bin/md_cache

@@ -1,17 +0,0 @@
-#!/usr/bin/env rc
-. 9.rc
-
-cachedir=/tmp/md_cache
-mkdir -p $cachedir >[2]/dev/null
-
-tmpfile=$cachedir/mdtmp.$pid
-score=`{{tee $tmpfile || exit 1} | sha1sum}
-cachefile=$cachedir/$score
-
-if(test -f $cachefile)
-    cat $cachefile
-if not {
-    markdown.pl < $tmpfile | tee $cachefile.$pid
-    mv $cachefile.$pid $cachefile
-}
-rm $tmpfile >[2]/dev/null