tests/test-requires

patchbomb: respect HGPLAIN when piping --test output to PAGER

It makes easy to use `hg email --test` from another tool.

#!/bin/sh

mkdir t
cd t
hg init
echo a > a
hg add a
hg commit -m test -d "1000000 0"
rm .hg/requires
hg tip
echo indoor-pool > .hg/requires
hg tip

true