cp: gnu test case `i-2` compatibility for mv

[matrixhead]

This shared test case for cp and mv checks how they behave when the -i and -f flags are given. The test is failing because uu-cp's prompt message differs from GNU's cp. for example

echo e > e
echo f > f
chmod 0 f
cp -if e f

this should give us a prompt saying.

cp: replace 'f', overriding mode 0000 (---------)?

but instead uu-cp would give us a normal prompt like this

cp: overwrite 'f'?

[sheikhevan]

It seems like the current code is taking after freebsd coreutils, which only ask for overwrite.

[jfinkels]

The prompt messages seem fixed now, and the GNU test file tests/mv/i-2.sh is passing, so I'll close this as done.