Task: Confirm that any arbitrary revision specifiers work.
Task: Confirm that any arbitrary revision specifiers work when
used in the *.cbdsst/*.cbdwst files.
This should 'just work' with CBD, since it rewrites the 'p4 sync'
commands, and the 'p4 sync' can handle any valid revision specifier.
This is known to work with changelist and labels, but needs to be
tested for the various forms of date and date/time stamp entries,
which might foil the Python regex stuff.