Always log an automatic ids.partition decision
Merge branch 'bigbang' of github.com:thinkaurelius/titan into bigbang
Merge branch 'bigbang' of github.com:thinkaurelius/titan into bigbang
Fix IDAllocationTest UNIQUE_INSTANCE_ID generation

IDAuthority instances that required distinct UNIQUE_INSTANCE_ID values
were given identical ones in the IDAllocationTest setup methods,
leading to technically nondeterministic but extremly likely failures
in testMultiIDAcquisition.

This commit adds a pair of new tests: one that enforces the
UNIQUE_INSTANCE_ID distinctness constraint, and another that
stresstests a single IDAuthority instance and partition with
concurrent block requests from different threads.

This commit also refactors the IDAllocationTest to remove the
vestigial openStorageManager method parameter.  None of the
implementations of the method actually use it anymore.

All tests pass on my machine.