Issues of licensing for rproxy/librsync

On the whole we'd like people to be able to put this into nonfree
software, and also for it to be accepted into the standard Apache and
Squid distributions.

After talking to a few people I think it might be most appropriate for
librsync to be released under the GNU Lesser GPL, and for rproxy
itself to be released under the GNU GPL.

Until we resolve this, we should make sure we don't use any software
in them that would tend to restrict the licensing options.  Most of
the things we'd be interested in using -- glib in particular -- are
LGPL'd already, so they're not such a problem.  (Is Apache happy to
ship with LGPL'd software?)

In this case having a good reference implementation of an open
standard is probably more important than a virus to help open
software, or at least I hope so.

In fact, it seems there are problems even with the LGPL going into
some code.  Roy Fielding recommended the MPL.  Another alternative is
the BSD license, with or without licensing clauses.  Another again is
to assign the copyright to the Apache Software Foundation and put it
under their license.