SE-216: Upgrade Spring to 3.2.2
Increment build version; increment Ambra import to 2.6.3
Merge branch 'dev/SE-216' into release/2.6.3rc
Add wagon-ssh extension (allows deployment under Maven 3)
Downgrade wagon-ssh extension version to 2.2

There is a documented bug with later versions:
http://jira.codehaus.org/browse/WAGON-393
Updates for dependencies
Fixing ambra version
Changing phase of local dependency purge
Removing dependency not needed for the tomcat6 plugin
Merge branch 'master' into dev/FEND-901
Merge branch 'master' of github.com:PLOS/ambra-admin into release/2.6.3rc
Fixing purge to happen in the correct phase
Adjusting phase of purge process
Dependency include for FEND-901