tests/test-1102

tests: allow cvs import to reorder its filename list

Also fix script to generate non-zero length test file b.

#!/bin/sh

rm -rf a
hg init a
cd a
echo a > a
hg ci -Am0
hg tag t1 # 1
hg tag --remove t1 # 2

hg co 1
hg tag -r0 t1
hg tags