gtk_doc_parser: expose gdbus-codegen-sources argument
gtk_doc_parser: expose gdbus-codegen-sources argument

And deprecate gtk-doc-remove-xml

hotdoc/hotdoc,hotdoc/hotdoc,thiblahute/hotdoc,thiblahute/hotdoc,thiblahute/hotdoc,hotdoc/hotdoc,thiblahute/hotdoc,hotdoc/hotdoc,hotdoc/hotdoc,thiblahute/hotdoc,thiblahute/hotdoc,hotdoc/hotdoc