Merge pull request #3 from nuvolabase/master

update from nuvolabase repo
try to solve #1308
Merge pull request #4 from nuvolabase/master

update from nuvolabase repo
Create Function console command

Fixed missing command in available commands

Added parameters to the existing command parser
Proposition to make clusters have varying security for a given class
Fixed problem on marshalling OMultiValueIterator across the binary protocol
Issue #1404  WAL background commit executor was added.
Issue #1404  Dirty pages and page log record were added.
2Q Cache flush optimization
Merge remote-tracking branch 'remotes/enisher-orinet/master'
Fixed problem with flatten against fields
Merge branch 'master' of https://github.com/nuvolabase/orientdb
Issue #1404  WAL methods were added in disk cache.
Merge remote-tracking branch 'origin/master'
Console: fixed a typo on display record bytes
Merge branch 'master' of https://github.com/nuvolabase/orientdb
Fixed compatibility problems against Java < 7
Fixed compatibility problems against Java < 7
Fixed compatibility problems against Java < 7
Issue #1404  Checkpoint was slitted to fuzzy checkpoint and full checkpoint. New add page record was added.