Log Message:
Update ruby-rcairo to 1.10.1.

Release 1.10.1 (2011-10-12) Kouhei Sutou <kou@cozmixng.org>)
============================================================

Features
--------

  * Accepted Cairo::EXTEND_PAD as extend value.
  * Suppressed a warning. [Stefan Salewski]
  * Bound CAIRO_SURFACE_TYPE_XLIB and CAIRO_SURFACE_TYPE_XCB.
  * Supported cairo 1.10.2.
  * Fixed recording surface test. #4 [Mamoru Tasaka]
  * AcceptedCairo::OPERATOR_HSL_LUMINDSITY as operator value.
    #6 [Matt Bramlage]
  * Suppressed warnings on Windows. [Nikolai Weibull]
  * Added --without-vendor-override options to extconf.rb.
    [Nikolai Weibull]