[odb-users] do not use PRAGMA_DB macro if ODB is using gcc 6.x as underlying compiler

[Boris Kolpackov]

Hi Sten,

Ok, the fix is in master:

http://scm.codesynthesis.com/?p=odb/odb.git;a=commit;h=1f87ed70f983bc0fb920a0e1360de0977fe10c9f

Thanks again for the report/test case and let me know if you run into any
other issues with GCC 6.

Boris