Issue #2901 first version of pool.
Merge branch 'develop' of github.com:orientechnologies/orientdb into develop
fixed break of binary network compatibility with 1.7.* 2.0-M* versions.
Merge branch 'develop' of github.com:orientechnologies/orientdb into develop
Issue #2901 database pool was integrated into tests and graph factory.
Merge branch 'develop' of github.com:orientechnologies/orientdb into develop
Fixed issue #3037
Fix for issue #3042: incorrect shutdown in embedded mode
Issue #2901 database pool mt issue was fixed.
Merge branch 'develop' of github.com:orientechnologies/orientdb into develop
Issue #2901 minimum pool size was changed.
Merge pull request #3043 from PhantomYdn/issue3042

Fix for issue #3042: incorrect shutdown in embedded mode
Issue #2901 pool performance was improved up to 255 000 ins/s in benchmark.
Merge branch 'develop' of github.com:orientechnologies/orientdb into develop
Fixed issue #3005 even if test case is missing
Fixed compilation problem by restoring class import (no wildcards)
Fix of loading OrientDB in JBOSS env by avoiding direct use of com.sun package.
Merge pull request #3047 from PhantomYdn/fix-com-sun-package

Fix of loading OrientDB in JBOSS env by avoiding direct use of com.sun package
Issue #2901 pool factory was added to cache connections for many users at once.
Merge branch 'develop' of github.com:orientechnologies/orientdb into develop