Added additional overload to graph.DominoElement.getProperty to allow
for null object results or auto-instantiation (may push this down to
Document.getItemValue)

Added graph.DominoGraph.commit overload to block cache clearance for
known mid-operation commits.

Added fallback implicit object construction to use VariableResolvers
when existing session is not found in RequestMap

Signed-off-by: Nathan T Freeman <nathan.freeman@redpilldevelopment.com>