win32: Don't allow installing on Vista

It does not run on Vista
win32: Update Python links
Fix possible crash in spell check

Closes #1048
Fix apostrophe related spell check issues
Add GeeksIRC and IRC4Fun to network list

Closes #1057
Closes #1058
Fix various crashes with pluginpref
Fixed expand_homedir to handle paths like "~user" correctly.
Bump updater version on Windows
Fix warning
Stupid github editor adding newlines
osx: Create bundles using homebrew

Just easier to maintain than jhbuild.

See https://github.com/TingPing/homebrew-gnome for deps.
Bump master to development release 2.11.0

To anybody confused this is not the next stable release, it is just a way to differentiate master
from the 2.10 branch and next stable will be 2.12.0 similar to Gnome's versioning scheme.