gbuild migration

Hi,

just sending this out to the list as a sideresult of a random chat with David
today: Looking at the modules that are still build with dmake (by grepping for
Module.*delivered) and found:

 - 18 external modules:
   afms stax more_fonts graphite libcdr libmspub libcmis libvisio external
   xsltml hsqldb tomcat xpdf apache-commons libxmlsec saxon jfreereport lpsolve
 - 3 modules that need to die anyway:
   cosv, udm, autodoc
 - 7 "real" modules:
   extras bridges soltools sysui cli_ure readlicense_oo setup_native

To get one gbuild instance build only (tail_build only), migrating the "real"
module should be the enough for a start. I assume extras, setup_native,
readlicense not being depended upon by anything other than scp2 (so they could
be run after tail_build for now). So bridges, soltools, sysui, cli_ure are the
ones that should allow us to do a 'complete' gbuild-only build, if anyone is
looking for the 'important' remaining modules. ;)

Best,

Bjoern