Merge pull request #8 from trnl/master

Added thread blocked time (acquired via mgmnt beans).
fixed JUNITBENCH-45
Merge pull request #9 from ryo-murai/hotfix-JUNITBENCH-45

JUNITBENCH-45: BenchmarkRule implements deprecated MethodRule as of the junit 4.10. (ryo-murai via Dawid Weiss)
Removed a test case that was hardware-dependent (failed on multiple-core machines) and test-method order dependent.
Cleanups and refactorings following pull requests.
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