Bump to 1.8

Bump to 1.8
 o Made it easier to include example code in the source code comment blocks.
   "|[ ... ]|" can be used to delineate example code (it just gets converted
   to "<informalexample><programlisting>"), and most of the text in example
   code is left as it is. The only thing that is still expanded is
   '#' to allow links to a symbol's documentation, e.g. '#GtkWidget'.
 o Made the field widths wider for the HTML output, so it looks a bit nicer.
 o Added a '--rebuild-sections' option to gtkdoc-scan to automatically rebuild
   the MODULE-sections.txt file. This only works if all the header files are
   organized neatly and functions don't need rearranging in the docs.
 o Added a '--rebuild-types' option to gtkdoc-scan to automatically rebuild
   the MODULE.types file, so you don't need to add new types manually.
 o Leave CDATA sections as they are, in the extra XML content files and within
   source code comment blocks.
 o Allow the section id and #include's to be set within the "SECTION:" comment
   block, using "@Section_ID:xxx" and "@Include:".
 o Added "--default-includes" option to specify the default #include's (for
   people who are using --rebuild-sections and so can't specify it in
   MODULE-sections.txt).
 o Added a '--query-child-properties' argument to help document child
   properties of arbitrary GObjects (used by things like canvas widgets).
 o Fixed documentation of signals of interfaces.

Package-Manager: portage-2.1.2-r9