Made those methods static, so that it is easy
to use them outside the module.
Also updated the Namespace-constants list.

Change-Id: Id0bf501457c53d1420a00ce58c9bcedfcba17908
Reviewed-on: https://gerrit.libreoffice.org/38708Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Michael Meeks <michael.meeks@collabora.com>