Electrolysis repository mostly ready

Future work on Electrolysis will take place in the project repository:

http://hg.mozilla.org/projects/electrolysis

I have flattened the experimental work from bent's and cjones' repositories
up through revision
http://hg.mozilla.org/users/cjones_mozilla.com/tmp-electrolysis/rev/61cd9e89fd00

bent, this means there are a few changes in your repository which are not
yet included:

*
http://hg.mozilla.org/users/bturner_mozilla.com/libchromiumipc/rev/d4b6cbdadc6b
*
http://hg.mozilla.org/users/bturner_mozilla.com/libchromiumipc/rev/7fdbf32d02ed
*
http://hg.mozilla.org/users/bturner_mozilla.com/libchromiumipc/rev/b9fc61c1eb28
*
http://hg.mozilla.org/users/bturner_mozilla.com/libchromiumipc/rev/3e63f7cb181a

I've also landed the IPDL compiler/code generator into this repository:
we're no longer going to maintain a separate repository for this code.

There are a few things left before we're ready for many people to start
hacking at this code:

* hook up IPDL to the build system (bsmedberg) -- I should have this done
tomorrow
* sub-protocols/protocol management: cjones, how is this going?
* IPDL documentation (cjones)
* compiling on Windows... the plugin stuff is mostly there, but I'm not sure
we've looked at the tab bits at all. Right now it doesn't have to *work*,
just compile.

I've filed bug 500755 to track getting regular (onchange and nightly) builds
of this branch.

For the record, we don't expect this branch to build or work on mac at the
moment, although we'll be looking for volunteers to help with mac porting
soon enough!

--BDS