REVIEW: upgrade pax-swissbox to 1.7.1

To pick up https://ops4j1.jira.com/browse/PAXSB-75 fix which removes the misleading 'Bundle could not be generated' warning that can occur when a bundle loaded with a wrap: URL has its MANIFEST.MF examined without reading the entire bundle contents.

http://bamboo.s/browse/NX-OSSF205-2 :white_check_mark: