Add some logging that would have been helpful investigating bug 1117449.

Conflicts:
	modules/core/native-system/src/main/java/org/rhq/core/system/JavaSystemInfo.java

Cherry-Pick master 90794dc7a122a1f519bc7f96fa2078d697a160f5
[BZ 1117449] Add logging to NativeSystemInfo to detect why Java platform was selected

Cherry-Pick Master 2a09fd40f5d0b25c5d1c3ba37c553095dc366e60