Use INVOKE_ON_ANY strategy for Connection.getTransactionIsolation()
Fix bug in DistributedStateManager where our local state is
never persisted during activation/deactivation.
Add support for data-only dump-restore.

Conflicts:
	core/src/main/java/net/sf/hajdbc/dialect/mysql/MySQLDialect.java
Add missing messages.  Minor tweaks/fixes.
Merge pull request #67 from pferraro/master

Port fixes from 3.0.