...fixing regression introduced with 49eb02f07a
"new loplugin:unusedvariablemore"
Change-Id: Ib598d67add50031937c9c9f3e23ea16d0a1da107
Wrappers so you can use all the Java Runtime Environments with their slightly incompatible APIs with more ease. Used to use an over-engineered "plugin" mechanism although there was only one "plugin", called "sunmajor", that handles all possible JREs.