[Swift-devel] nightly tests changes

[Ben Clifford]

I made some changes to the nightly tests (one for more information, the 
other to fix the file counter test that was broken) but I don't know how 
to deploy them. I think at least nightly.sh doesn't get updated 
automatically.

r952: fix ls portion of file_counter nightly test - can't pass wildcards 
to ls as those are expanded by the shell, not by ls itself; and if ls 
finds no files it returns a failure code. Now use the root directory, on 
the assumption that this always has some files in it and is always 
readable.

r953: formatting of nightly test output - specify the full year, to match 
up with verbose specification of the time component; log the hostname on 
which the tests ran

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