tests: tidy up reporting of skipped tests
if not verbose:
- print 's' rather than '.'
- pass skipped test reports back to parent for -j
- report which tests were skipped at the end
- print '.' after test completion
adding foo
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
adding foo
rev offset length base linkrev nodeid p1 p2
0 0 0 0 0 b80de5d13875 000000000000 000000000000
1 0 24 0 1 0376abec49b8 000000000000 000000000000