Speeds up font compilation by around 200%

Cython is used to compile some hot paths into native Python extensions.
These hot paths were identified through running ufocompile with the hotshot
profiler and then converting file by file to Cython, starting with the "hottest"
paths and continuing until returns were deminishing. This means that only a few
Python files were converted to Cython.

Closes #23
Closes #20 (really this time)

misc/pylib/robofab/interface/all/dialogs_default.py

@@ -0,0 +1,76 @@
+"""
+
+    Dialog prototypes.
+    
+    These are loaded before any others. So if a specific platform implementation doesn't
+    have all functions, these will make sure a NotImplemtedError is raised.
+    
+    http://www.robofab.org/tools/dialogs.html
+    
+"""
+
+__all__ = [
+    "AskString",
+    "AskYesNoCancel",
+    "FindGlyph",
+    "GetFile",
+    "GetFolder",
+    "GetFileOrFolder", 
+    "Message",
+    "OneList",
+    "PutFile",
+    "SearchList",
+    "SelectFont",
+    "SelectGlyph",
+    "TwoChecks",
+    "TwoFields",
+    "ProgressBar",
+]
+
+# start with all the defaults. 
+
+def AskString(message, value='', title='RoboFab'):
+    raise NotImplementedError
+
+def AskYesNoCancel(message, title='RoboFab', default=0):
+    raise NotImplementedError
+
+def FindGlyph(font, message="Search for a glyph:", title='RoboFab'):
+    raise NotImplementedError
+
+def GetFile(message=None):
+    raise NotImplementedError
+
+def GetFolder(message=None):
+    raise NotImplementedError
+
+def GetFileOrFolder(message=None):
+    raise NotImplementedError
+
+def Message(message, title='RoboFab'):
+    raise NotImplementedError
+
+def OneList(list, message="Select an item:", title='RoboFab'):
+    raise PendingDeprecationWarning
+    
+def PutFile(message=None, fileName=None):
+    raise NotImplementedError
+
+def SearchList(list, message="Select an item:", title='RoboFab'):
+    raise NotImplementedError
+
+def SelectFont(message="Select a font:", title='RoboFab'):
+    raise NotImplementedError
+
+def SelectGlyph(font, message="Select a glyph:", title='RoboFab'):
+    raise NotImplementedError
+
+def TwoChecks(title_1="One",  title_2="Two", value1=1, value2=1, title='RoboFab'):
+    raise PendingDeprecationWarning
+
+def TwoFields(title_1="One:", value_1="0", title_2="Two:", value_2="0", title='RoboFab'):
+    raise PendingDeprecationWarning
+
+class ProgressBar(object):
+    pass
+