Remove unused import.
Preparing for Unsafe-free CHMv8. Added an interface.
Copy-paste Unsafe using classes.
Remove all Unsafe usage from jsr166e.nounsafe classes.
Move CHM instantiation into a static method.
Add a Unsafe/no-Unsafe switch.
Crude testing setup.
Improve SecurityException detection.
Tweak the no-unsafe test case.

The no-unsafe TS::Cache test suite is now run by passing a TEST_NO_UNSAFE env var like this: rake test TEST_NO_UNSAFE=true.
Merge pull request #24 from thedarkone/no-unsafe-chmv8

Added a "sun.misc.Unsafe-fee" TS::Cache JRuby backend