Minor: fixed javadoc, put a variable as final, managed no return in OPLA/execute block
Extendible hashing tests fix.
Merge pull request #1328 from Eclesia/master

Patch : constant parameter not passed in runtime parameters at execution
Merge branch 'master' of https://github.com/nuvolabase/orientdb
Extendible hashing tests were added and performance was improved.
Merge remote-tracking branch 'origin/master'
Merge branch 'master' of https://github.com/nuvolabase/orientdb
Fixed issue #1321
FIxed issue #1327
Prev and next bucket links were removed in favor of runtime calculation in extendible hashing to minimize disk seeks overhead.
Extendible hashing memory consumption improvements.
Extendible hashing - node local depth method call was replaced by direct property access.
HTTP: Fixed bug on upload of binary files
Merge branch 'master' of https://github.com/nuvolabase/orientdb
Fixed upload problems
HTTP upload: fixed bug on management of byte 0
Extendible hashing  - append only insertions after bucket split were implemented.
Merge remote-tracking branch 'origin/master'
Extendible hashing  - after deletion half-empty buckets are merged.
FIxing test cases after the exception on value conversion