Define exclusion list to avoid checking certain files into ClearCase.
The "checkin everything outstanding" makes script creation much easier.
But we also need an "I know that's checked out but I don't/never want to
check it in".
Perhaps a definable exclusion list for the checkin everything? We need
this to support one-sided move and no-parent-directory checkin scenarios.
Perhaps define a .ccignore file syntax, in the proud tradition of
(.cvs|.git.p4)ignore files.