color: don't crash on invalid status codes (issue2036)
If an unknown file with a newline appears in the status output, color
shouldn't raise a KeyError trying to parse second line in the filename.
#!/bin/sh
mkdir t
cd t
hg init
echo a > a
hg add a
hg commit -m test -d "1000000 0"
hg history
hg manifest --debug
hg cat a
hg verify