matplotlib Code

Make cairo testing easier (partial)

Tying up a few loose ends from revision 3462.

Refactored the wx.App creation into a function, _create_wx_app(), that retains a reference to the wx.PySimpleApp instance it creates

Added a missing "not" to the wx.App.MainLoop() detection

Fix crash in memleak_gui.py with Wx backend related to the removal of
the wxapp global variable.

Fix Wx window destruction to no longer use the wxapp global variable
(which was removed in r3459)

Removed the global wxapp variable.

Applied Tim Swast's patch (#1747313) to prevent wx.App.MainLoop() from being called twice when pylab is used from within a wxPython application. Under wxPython 2.4 there is no wx.App.IsMainLoopRunning() method, so this probelm would still occur.

Remove an unnecessary re-alloc of bitmap data during window resize (TkAgg)

Display version information about the toolkit being tested.

Fix cyclical reference in Qt4 toolbar.

Make memleak_gui.py output loadable via pylab.load()