Fixing problem where OpenmrsClassScanner led to an OpenmrsClassLoader
memory leak for each application context refresh: Investigate possible
memory leak in 1.9.0 or one of its bundled modules. - TRUNK-3440
Fixing OpenmrsClassLoader memory leak caused by threads which have a
longer lifespan than it: Investigate possible memory leak in 1.9.0 or
one of its bundled modules. - TRUNK-3440