imported patch cache2-merge-20140106/4-942835-dont-purge-with-pending-callbacks.patch
imported patch cache2-merge-20140106/5-924116-frecency-store-and-halftime-experiment.patch
Bug 923016 - HTTP cache v2: design and impl a persistent index
imported patch cache2-merge-20140106/7-945945-cachehandle-crash-nsthashtable-convert.patch
imported patch cache2-merge-20140106/8-949250-timer-metadata-global.patch
imported patch cache2-merge-20140106/9-930450-cacheiothread-xpcomthread-wait-cond.patch