Log Message:
Update to 1.10.0:

Overview of changes from py2cairo 1.8.10 to py2cairo 1.10.0
===========================================================
General Changes:
    py2cairo 1.10.0 requires cairo 1.10.0 (or later).

New Constants:
    cairo.FORMAT_RGB16_565

Bug Fixes:
    context.get_source().get_surface() fails        #33013
    Add support for './waf configure --libdir=XXX'  #30230

Documentation Changes:
    Upgrade to using Sphinx 1.0.7.
    Include html documentation in the pycairo archive file.

Build Changes:
    Update waf to 1.6.3

Other Changes:
    Remove setup.py
    Improve/simplify unicode filename support.
    Improve/simplify unicode text support.