Pass a list of named extensions to cythonize( to fix #37.)
OGR doesn't recognize 'iso-8859-1', but 'ISO-8859-1'.

Kinda disappointed in OGR's recoding support, only ascii, utf-8,
and iso-8859-1 are supported. Maybe more coming in future versions?
Use upper case for encoding names internally, lower case in Python.
Last updates for 0.12.

Sad and angry about the bombings in Boston that I've been reading
about while coding this, hoping we can all keep our heads in the
aftermath. Peace, everybody. Love, me.