* docs/tutorial/C/index-in.docbook: Add sections 4-6 of the "Building
applications" chapter. It's a C++/gtkmm version of a chapter in the gtk+
documentation.
* docs/tutorial/C/figures/buildapp_*.png: 3 new files.
* docs/tutorial/Makefile.am: Add new image files.
* configure.ac: Add GLIB_GSETTINGS.
* examples/Makefile.am: Don't distribute resources.c files.
* examples/book/buildapp/Makefile.am: Add files in step[4-6].
* examples/book/buildapp/step[1-2]/Makefile.example: Improved
* examples/book/buildapp/step[4-6]: New directories with many new files.
Bug #772391