[DAS2] squid proxy

[Andrew Dalke]

P.S.

   Development was much more fun once I set up a Squid proxy
for the dev. server and forced it to cache everything for up
to a day.  Besides getting rid of the network overhead, some
of the server responses (like 'type') take a noticeable time.

   In doing that I found a bug in dasypus.  The HTTP request
object changes when using a server, so

   http://www.biodas.org/blah
becomes (in effect)
   http://proxy/http://www.biodas.org/blah

Some of my fixups and tests are server-specific and
I didn't expect the request server name to change
from underneath me.

					Andrew
					dalke at dalkescientific.com