TEIID-2598 ensuring 7.4 compatibility
TEIID-2597 expanding timeout logic to httpdispatch, connection timeouts,
and salesforce
TEIID-2597 updating sample ds configs
TEIID-2600 adding property value validation and minor exception handling
changes
TEIID-2601 better handling for streaming lobs and improving the
design/thread-safety of connectormanager
Merge branch '8.4.x' of https://github.com/teiid/teiid

Conflicts:
	engine/src/main/java/org/teiid/dqp/internal/datamgr/ConnectorManagerRepository.java
	runtime/src/main/java/org/teiid/deployers/VDBStatusChecker.java