More STC fixes and tweaks.

Added another STC demo for wxPython.  This one sets up an editor with
the Python lexer and a bunch of styles.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_2_BRANCH@7224 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

utils/wxPython/demo/Main.py

@@ -22,7 +22,8 @@ _useSplitter       = true
 _useNestedSplitter = true
 
 _treeList = [
-    ('New since last release', ['wxGrid', 'wxStyledTextCtrl_1',
+    ('New since last release', ['wxGrid',
+                                'wxStyledTextCtrl_1', 'wxStyledTextCtrl_2',
                                 'ActiveXWrapper_Acrobat', 'ActiveXWrapper_IE',
                                 'FileBrowseButton', 'wxCalendar']),