in the process I had to teach the idl compiler to cope with identifiers
like SfxGroupID::Math, which has the side effect of requiring a space
before a ':' in some of the .sdi files.

Change-Id: If256599cb8aa1dfc0a33642c5070c5560702f3ba
Reviewed-on: https://gerrit.libreoffice.org/40441Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>