Add in xml services interface from 2.8.x - dev doco for 2.8.x now applies
to 2.10.x as well (how did this get lost?)
Remove xml.metadata.validation - been replaced by xml.metadata.validate
Add xml.mef.import and xml.mef.export
Include output redirect for mef.export
Tidy pom file to provider versions for plugins
Remove seasar (jsonic is available elsewhere)
Remove sonatype plugin repo - not necessary
Merge remote-tracking branch 'upstream/2.10.x' into 2.10.x