Checks for optional features in test cases are wrong

Reported by David Sanders:

The TCK for JSR-170 Final Release
(http://jcp.org/aboutJava/communityprocess/final/jsr170/index.html)
checks for level 2 and optional features by comparing
Repository.getDescriptor to null. According to the
spec and javadoc, getDescriptor must return either
"true" or "false" for the "capability" keys.

Example in AbsractJCRest.java:

// setup custom namespaces
if
(helper.getRepository().getDescriptor(Repository.LEVEL_2_SUPPORTED)
!= null) {
NamespaceRegistry nsReg =
superuser.getWorkspace().getNamespaceRegistry();

I think the above if statement should be:
if
(helper.getRepository().getDescriptor(Repository.LEVEL_2_SUPPORTED)
.equals("true"))