[Truffle] Removed redundant specializations.
[Truffle] Simplified and consolidated a nil object guard.
Fix toplevel scoping issue in JIT breaking CI tests.
Add Ant to build prerequisites for now (#2236)
Exclude regressed MRI test for #2237.
Different strategy for weak cache test.
fix another joda-2.5 exception

one exception I see only locally and the other I see only on travis - no idea why. treat both
as RangeError on the ruby side which honors the test-case.
Merge branch 'master' of github.com:jruby/jruby
fix the ASM test on -Pdist
Add jruby.aot.loadClasses property for pre-9k AOT .class logic.
Clean up imports.