tpaviot/oce — pull request #342 by dbarbier (2013-02-16 20:07:00+00:00)
Title: Fix test/TDataXtd_test/CMakeLists.txt

It seems commit bc50e52 had been reverted by commit e9ad629, no idea
what happened. Anyway, reapply bc50e52:

Run TDataXtd_test only if OCE_DISABLE_X11 option is not set

It depends on TKCAF and TKXCAF modules which are built only
if OCE_DISABLE_X11 is not set.

Moreover TKXCAF is built by DATA_EXCHANGE and not OCAF, so
we must check against DATA_EXCHANGE instead of OCAF.