dropping xcode 5.1 workaround

- last spring xcode and /usr/bin/python started fighting over compiler
flags
- now that llvm has settled down, it objects to being reminded of the
ARCHFLAG it used to require
saner encoding values from the fonts() command

- rather than using the soup of NSStringEncoding consts (plus core
foundation’s additions), let NSString localize the encoding value
- changed the fonts(western=True) usage to fonts(encoding=‘western’)
- when passed an invalid encoding value, prints the list of
found-encodings before crashing
arg-fiddling
moved fonts() implementation to Family.find
moved typography from pathmatics to foundry

- created a cFoundry extension to handle text-beziers, line-fragment
measurement, and aat-styling (now with actual SFNT constants rather
than magic-numbers)