The special character tokens are localized character names! This
means that at least in German the %mu wasn't replaced in the
example, as the parser expected %my. So tell the parser to expect
non-localized input. And share it for all the parsing.

Change-Id: I4c3c0f35eb61c37a2101b51b445e7cc888a1f429
Reviewed-on: https://gerrit.libreoffice.org/73172
Tested-by: Jenkins
Reviewed-by: Jan-Marek Glogowski <glogow@fbihome.de>