Fix a problem in sccs_realuser().  Previously in root's crontab we would return UNKNOWN_USER aka 'anon' for the real user.  This creates situations where root can fail the eula test, but running 'bk legal' interactively can't fix the problem. 
Fix a problem in sccs_realuser().  Previously in root's crontab we would
return UNKNOWN_USER aka 'anon' for the real user.  This creates situations
where root can fail the eula test, but running 'bk legal' interactively
can't fix the problem. 

bk: 47b0621aI1YDyB7ROUGdChqgg7p_zQ
bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper