[CMake] [ctest] CTEST_CUSTOM_TESTS_IGNORE in CTestCustom.cmake ignored in script mode (ctest -S)

[Maik Beckmann]

This is a screenshot
  http://imagebin.ca/view/TtO6Iu.html
of an eclipse gdb session, which show that the already populated
  CustomTestsIgnore
vector is cleared.

I don't know if this is the source of the bug, since it should be refilled in
  cmCTest::PopulateCustomVector(..)
but the cmMakefile instance return 0 when asked for CTEST_CUSTOM_TESTS_IGNORE in
  const char* dval = mf->GetDefinition(def);

-- Maik