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Multi repository cache support
This release resolves a limitation with persistence caching introduced in 5.1, a new caching service "ezpublish.cache_pool" takes a siteaccess group setting "cache_pool" into consideration for selecting cache service, and hence can be configured with multi repository setups in mind. In addition you can now safely reuse this cache pool as the persistence cache is prefixed within "spi" cache key and will not clear your data if you reuse it.
Support for more than 30 languages
With 64 bit servers now being common, this release takes advantage of that if present and provides support for 62 languages on 64-bit environments and 30 languages on 32-bit platforms. This feature is support across "new stack" and "legacy stack" and is accomplished by increasing the size of the int used for language bit masks, improved storage engines still has the possibility to provide even more languages on pure "new stack" in the future.
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