another probably Solaris test failure (largefiles)

[Danek Duvall]

The other test failure I'm running into with 3.6 is in
test-largefiles-update.t, where I'm getting an error from mv:

       $ hg commit -m '1-2-3 testing'
       $ hg rollback -q
       $ mv 58e24f733a964da346e2407a2bee99d9001184f5 .hg/largefiles/
    +  mv: 58e24f733a964da346e2407a2bee99d9001184f5 and .hg/largefiles//58e24f733a964da346e2407a2bee99d9001184f5 are identical
    +  [2]

GNU mv silently ignores this condition.  But I don't understand why this
command is there in the first place.  Using rm would have the same effect
-- unless there's some error case on Linux or using GNU mv that this is
designed to flush out?

Thanks,
Danek