sha*sum and filenames with backslashes

[Geoff Kuenning]

When the *sum family of programs are given a filename that contains
a backslash, a spurious backslash is given at the beginning of the
output line.

This appears to be a feature, since it's explicitly in the code.
However it isn't documented, which can cause surprises for programs
that expect to parse the output of *sum.
-- 
    Geoff Kuenning   address@hidden   http://www.cs.hmc.edu/~geoff/

Have I mentioned that I hate computers?
        -- Drew Bernat, HMC '99