put symbols in the sections.txt into the right sections (so that we dont get wrong undocumented symbols) added TITLE ...

Original commit message from CVS:
put symbols in the sections.txt into the right sections (so that we dont get wrong undocumented symbols)
added TITLE tags where they were missing
fixed section names so that gtk-doc introspection works
fixed typos in api docs and docbook docs
added some thoughts about new interfaces (to personal notes)