test-convert-cvsnt-mergepoints: ignore differences between CVS 1.11 and 1.12. - factor out cvsci function (similar to other test-convert-cvs* scripts) - add filterpath function (also similar to other scripts) - generally munge the output of CVS - add lots of output to make it easier to follow when things go wrong This doesn't make the test pass reliably under CVS 1.11; it just makes it behave the same as under CVS 1.12, i.e. sometimes it passes and sometimes it fails. Failure is more frequent with faster hardware.