Attempt to rollback part of the UID assignment code that was re-written
asynchronously.

Signed-off-by: Chris Larsen <clarsen@euphoriaaudio.com>

Conflicts:
	src/core/IncomingDataPoints.java
	src/core/TSDB.java
	src/core/Tags.java
	src/uid/UniqueId.java
Fix unit tests from the write path async rollback.
Fix UniqueId to pass the actual runtime exception instead of recasting as a
generic in getOrCreateId.

Signed-off-by: Chris Larsen <clarsen@euphoriaaudio.com>