0.8.11claws156

0.8.11claws156

* po/POTFILES.in
        include plugin .c files for translation until I
        find a better solution to have plugins have their
        own textdomain
* src/plugins/demo/demo.c
* src/plugins/image_viewer/plugin.c
* src/plugins/mathml_viewer/mathml_viewer.c
* src/plugins/spamassassin/spamassassin.c
* src/plugins/spamassassin/spamassassin_gtk.c
* src/plugins/trayicon/trayicon.c
        add gettext macros for plugin name and description