Fixed issue #1507: changed mvrb-tree cache to be limited with the threshold
Index: fixed problem on auto-rebuild with remote protocol
Changed default threshold to 10k. Issue #1507
Fixed issue #1494
refactoring of 2q size increase
adding test case for am queue
Fixed issue #1509
merge with nuvolabase master
Merge remote-tracking branch 'nuvolabase/master' into 2qfix
2q cache refactoring
additional tests
Increase on demand flag was switched on.
Merge branch 'logart-2qfix'
Refactoring of 2Q cache automatic increase of memory from @logart
Both Snappy libraries are made optional.