Don't sync files to disk if deleteFilesAfterClose is true.
Maven: Package mapdb as osgi-bundle. Fix #257
Merge pull request #256 from harishreedharan/master

Don't sync files to disk if deleteFilesAfterClose is true.
Pull request #255: Make sure that all files are closed upon attempts to open a broken DB.
VolumeTest: remove long running test
CacheStressTest: remove long running test
DB: after DB is closed all methods should throw `IllegalAccessError("already closed")` exception
Maven: return parallel unit test execution. Memory hungry tests were removed
BTreeMap: make sure modification listener is protected by node locks. Fix #226
Pump: pump between stores had bugs. It will be relased after MapDB 1.0. All relevant methods were removed from public access for now.
DBMaker: RAF is now on by default.

MMap Files are much faster, but I decided to play safe and not to risk data corruption on 32bit systems.

We could detect 64bit systems and enable mmap automatically on those. But that would make it hard to reason about performance and current configuration.
DBMaker: fix previous commit. RAF was not default option.

Thanks Vadim Zverev for help
Examples: fix failing test case from previous commit.
StoreDirect&WAL: add store version for future backwad compability
StoreDirect&WAL: add feature masks
DataOutput2: solve some todos
Serialzier: add fixed size hint
Replace InternalError with AssertionError
Test: delete unused stack trace
Remove Utils class