Evolution-Data-Server: Backend-per-process!

I've been quite busy in the last weeks (months?) working in the latest big change in Evolution Data Server (EDS) and I'm glad to announce that EDS now has support to run each backend on its own process, what means that if one backend crashes, you can still have your whole factory (with another backends) running.

This change is enabled by default since commit f3f1e94f but the user also can have EDS behaving as it was before by simply passing  "--disable-backend-per-process" to the configure.

So, if you're running EDS from git master and have noticed any weird behavior with your application that could be a bug introduced by this task, please, file a bug in our bugzilla and put me cc'ed there. On the other hand, if you feel somehow happy with/thankful for this change, GUADEC is going to happen in 2 weeks, I'll be there and I do drink beer ;-)

A really big thanks to Milan Crha that reviewed the patches and was actively discussing this idea since the beginning of the prototyping part. Also thanks to Matthew Barnes and Tristan Van Berkom for sporadic help in #evolution channel, usually in the hours that only people living in America were awake :-)