Removed unintended backport-concurrency dependency
Clarified support for JRuby 1.5+ and Groovy 1.7+
Upgraded to Quartz 1.8 and Velocity 1.7
Spring's EhCache setup builds on EhCache 2.1+ now

Specifically, EhCacheFactoryBean extends CacheConfiguration now and therefore inherits all configuration properties of the underlying EhCache version. This reduces the need for catching up with new EhCache properties on our side.

Issue: SPR-8258