improve infrastructure; remove delay(); add tests of multiple competing locking threads

rewrite ReentrantReadWriteLockTest

rename releaseLock to releaseWriteLock

Improve testAwait*_Interrupt

Improve testWriteLockInterruptibly

Improve testReadLockInterruptibly_Interrupted

Improve testWriteLockInterruptibly_Interrupted

Update Creative Commons license URL in legal notices

testcase hygiene: introduce CheckedRecursiveAction and CheckedRecursiveTask; eliminate almost all threadAssertXXX; use preferred junit conventions;narrow the scope of exception checking code; make sure test failures in non-junit threads produce proper stacktraces

Use MILLISECONDS.toNanos instead of multiplying by 1000*1000; use explicit assertEquals instead of assertTrue(...!= null); improve testPutWithTake

Fix rare failures in testWriteTryLock_Interrupted

import static TimeUnit.MILLISECONDS

fix testAwait_Timeout and testAwaitUntil_Timeout

declare checked exceptions in test methods

whitespace

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Make Interruptible locking tests obey delay conventions

Add tests

Fix some asserts and awaitUninterruptibly tests

Added tests for reentrant read acquire while hold write lock under contention

Test toString

Added and fised testcases

test for throws of NullPointerExceptions

Headers reference Creative Commons

Adjust protected method test class

Adjust condition declarations

test new instrumentation methods

Documentation scaffolding

Added serialization and lock tests