2.12.5: * Documentation: - Show stock icon images in the API reference again. - Show some pictures of widgets in the API reference. (Jonathon Jongsma) * Build: - Fix header inclusion and use using directive for C functions to fix build on gcc-4.3 (pre-releases) and Solaris. (Deng Xiyue, Tim Mooney, Kjartan Maraas, Bug #498438, #517530) - Install and find all needed files for gtkmm-demo, and correct the executable name. (Chris Wang. Bug #516602, #516600)