Fix bug in MD5-HEX

Hunchentoot used MD5:MD5SUM-SEQUENCE instead of MD5:MD5SUM-STRING.
The former was deprecated propably years ago and did not work
correctly with Unicode enabled Lisps.

Reported by Olexiy Zamkoviy.
update changelog and version
release 1.2.11
fix documentation problems found by make-docstrings
make :hunchentoot-dev depend on :hunchentoot and :hunchentoot-test
export parse-doc
export symbol that was documented as exported
handle-if-modified-since earlier when handling static files
prepare for release 1.2.12
release 1.2.12
fix wrong documented signature in acceptor-status-message (reported by Zach Beane)
prepare for release 1.2.13
prepare for release 1.2.13
release 1.2.13
only call ACCEPTOR-STATUS-MESSAGE when handler returned no content
update CHANGELOG
bump version
update html docs
release 1.2.14
Avoid race condition when stopping acceptor:
we must shutdown the taskmaster *after* the listener stops handing it off
new connections.