gtk-doc is used to document the API of the GTK+ and GNOME libraries.
o Removed the hard dependancy on openjade or jade, since XML is used mainly now rather than SGML.
o Install the .pc file in $(datadir) rather than $(libdir) since gtk-doc is architecture-independant.
o Added "--ignore-decorators" option to ignore a list of declarators in function declarations.
o Support '#Object::signal' and '#Object
roperty' to link to signals and properties
o Fixed missing index terms.