Parallel to bug #21 (OSX Packaging) It is worth pursuing a native OSX build using ​gtk-osx

This would integrate better with osx.

Important pieces are:

• ​http://sourceforge.net/apps/trac/gtk-osx/wiki/Build installing/building gtk-osx
• ​http://sourceforge.net/apps/trac/gtk-osx/wiki/Bundle for packaging
• ​http://sourceforge.net/apps/trac/gtk-osx/wiki/GtkQuartzEngine theming

Step by step: ​start-from-scratch Problem is that there seems to be an incompatibility with the version from macports... (detects existing pkg_config?)

Hopefully this will result in a package that works better than py2app's...

Must add:

• UI for when xpra is selected (simple checkbox)
• pass option to server.

Should also generalize options so that dimensions used for vnc/nx, and now jpeg for xpra, etc.. are passed generically, without needing to bump the protocol version for changes.

Could also be a bit more clever and auto-select jpeg for certain types of applications: media players, browser?, etc.

Added a test for it so we dont flood the logs (r1523)

GError: This build of gdk-pixbuf does not support saving the image format: ico

But we should either save it in png format (and hope the user's version of windows supports that or at least fails gracefully) or find a library that will convert it to ico (not found so far - only reading is supported, see PIL, etc)

Maybe pywin32 can give us access to something in windows API that will do the job, ​this is not too far off (it's only reading though).

Found ​Icon.Save in .NET

​this example writes it out straight to file. Newer versions of windows support icons as PNGs, we should at least do that when saving .ICO fails.