Don't emit "diff: diff <options> arguments" when diffing files if
-q is specified.
This improves compatibility with GNU diff.
Found by accident with diff -Nrq /usr/tests /usr/tests.new | grep Kyuafile.
MFC after: 2 months
Relnotes: yes
Don't emit "diff: diff <options> arguments" when diffing files if Tags None Referenced Files None Subscribers None
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