Log Message:
Changes 2.10.2:
*  Added --enable-atk=no option, to disable the build and use
  of the atkmm API, for use in embedded environments.
* Documentation:
  - Book: Added Plug and Socket chapter to book, with example.

Changes 2.10.1:
* Button: fix typo in get_image_position()
* Added MSVC support for 2.10