Changes by: Aleksey Nogin (nogin at cs.caltech.edu)
Date: 2005-11-28 14:15:34 -0800 (Mon, 28 Nov 2005)
Revision: 8235
Log message:

      When lockf is not supported and we fail to lock .omakedb because of that, just
      pring a warning and keep going:
      
      *** omake WARNING: Can not lock the project database file .omakedb:
                            The operation is not supported.
                WARNING: Be aware that simultaneously running more than one instance
                         of OMake on the same project is not recommended. It may
                         result in some OMake instances failing to record their
                         progress in the database.