Update tests from node-semver@v2.1.0

isaacs/node-semver@9109e22e9ab2269a7fae1444ca7094df4e22f977
Add almost literal port from node-semver js source
Fix some failing tests
Fix all tests
Move port from node-semver
Update external API to new port
Fixing the base tests
Remove dependency on Closure::bindTo() (php >=5.4)
Re-enable strict vs loose test
Make _convert public for usage in unbound closures
Merge branch 'semver-2.0.0'
Merge remote-tracking branch 'origin/master'