Commit Briefs
cmd/rc: fix declarations of some externally linked variables
Change-Id: If8fe1afecb9fe55f85e8e5af37521b83e787d718
rc: handle 4-byte utf-8
R=rsc http://codereview.appspot.com/3833043
Small tweaks
Lots of new code imported.
Plan 9's rc.
not a clear win over byron's, but at least it has the right syntax.