Use namespaces for all of the vala and genie plugins.
This was discovered when I loaded the vala and native test plugins at the same
time in gplugin query and they both tried to register types with the same
names.
Testing Done:
Ran unit tests and `gplugin-query` with all of the loaders and test plugins queryable.
Reviewed at https://reviews.imfreedom.org/r/984/
ifget_option('nls')
i18n.gettext(GETTEXT_PACKAGE)
else
summary('translations',
'You have disabled installation of translations which means '+