Import of turn restrictions (OSM).

OSM relations of type "restriction" will be imported. According to the
restriction type, several entries will be added to a turn cost table.
Furthermore, the turn flag encoder is now implemented by the current
edge encoders (e.g., foot flag encoder do not store any turn flags).
Import can be enabled by GraphHopper#setEnableTurnRestrictions(true),
which is disabled by default.
added parse method to GHPoint too
minor cleanup
failsafe handles integration tests and not surefire plugin. see http://stackoverflow.com/a/5090311/194609
Using BitUtil instead of new Helper methods

TurnEntryItem#getItemId() is faster now

OSMTurnRelation#getRestrictionsAsEntries is not static anymore
minor cleanup
trying unsafe on Android
use reset not clear, trove inconsistency https://bitbucket.org/robeden/trove/issue/27
no special area handling
make logging independent of periodic update in CH
fixing tests (due to the previous periodic-update-config change)
Map only required osm way ids
removed OSMRelationFactory
Merge pull request #135 from khuebner/master

Preparing support of turn restrictions (3): Import of turn restrictions