XMPP1 now in Psi mainline

We reported earlier about our work on finally bringing Psi up to speed with the XMPP standard. Because of necessary changes in QCA2, this could only be tested through the nightly Mac OS X and Windows builds we provide. Today, we merged a patched version of QCA2 into the Psi mainline development branch, making it possible for everyone to compile Psi with XMPP1 support (enabled by default).

Merging QCA2 has some other consequences. It is currently no longer necessary to compile and install an external version of QCA2 or any of its plugins. People still wanting to do so can avoid compiling the bundled version with the –enable-qca configuration option; these people should remove the xmpp1 configuration from src.pri as well. Another consequence is that there should no longer be problems with loading QCA2 plugins compiled using different settings than Qt: every plugin is compiled in statically into Psi.