* gobject/tut_gobject.xml:
* gobject/tut_gsignal.xml:
* gobject/tut_gtype.xml:
* gobject/tut_howto.xml:
* gobject/tut_tools.xml:
Unify spelling of GObject and GType. Improve some wording. Update the
usage of private data. Make tables use row-spans and add id's to them.

svn path=/trunk/; revision=5327