[Issue 256] Add command-line option to specify cvs user

https://ccvs.cvshome.org/issues/show_bug.cgi?id=256

User smcpeak changed the following:

                What    |Old value                 |New value
================================================================================
     Attachment is patch|                          |Created an attachment (id=
                        |                          |107)
Proposed patch to add
                        |                          | this feature.

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------- Additional comments from smcpeak <at> cvshome.org Mon Jun 20 11:37:28 -0700 2005 -------
Created an attachment (id=107)
Proposed patch to add this feature.