JHBuild moduleset changes

Matthias Clasen rearranged and tidied up the JHBuild modules. If your JHBuild reports an error:

failed to parse gnome-3.0: [Errno 2] No such file or directory: 'gnome-3.0'

An adjustment is required to moduleset within .jhbuildrc. Details within Matthias' blog.

So, does the new gnome-suites-core-3.0 build? No.

• gnome-packagekit fails, bug 636361
• tracker fails. It requires dbus >= 1.3.1, but JHBuild has dbus 1.2.24
• WebKit fails, bug 50451. Subsequently empathy, epiphany and yelp fail.