Disable exceptions on Windows for the time being.
Disable exceptions on Windows for the time being.

Enabling exceptions here makes 42 more tests failing. For example, CodeGeneration\RecursiveInit.C raises a unhandled exception in WinEHPrepare.cpp, at:
      if (UserI->isEHPad())
        report_fatal_error("Cleanup funclets for the MSVC++ personality cannot "
                           "contain exceptional actions");

root-mirror/cling,karies/cling,karies/cling,karies/cling,marsupial/cling,marsupial/cling,root-mirror/cling,karies/cling,root-mirror/cling,karies/cling,root-mirror/cling,marsupial/cling,root-mirror/cling,marsupial/cling,karies/cling,marsupial/cling,root-mirror/cling,marsupial/cling