This generates perfect hash for odf-tokens and use them with the tokenhandler.
With added test case to check to and fro mapping between tokens.
This is taken from Daniel's work in feature/fastparser branch.

Change-Id: I7cf77c1eb6c9dd68fd78108c6e0726507c7672e1
Reviewed-on: https://gerrit.libreoffice.org/28073Reviewed-by: Eike Rathke <erack@redhat.com>
Tested-by: Eike Rathke <erack@redhat.com>