Add/use delay() instead of Thread.sleep to ensure sleeps are long enough

Update Creative Commons license URL in legal notices

very small improvements to testToArray2

minor improvements to testToArray_BadArg

typo

whitespace

optimize testDelay

start of a big refactoring, with only one test refactored: testTimedPollWithOffer

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

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whitespace

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

reduce scope of check for IE in testBlocking{Put,Take}*

reduce scope of check for IE in test*WithOffer*

improve exception handling

import static TimeUnit.MILLISECONDS

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whitespace

Better test for timed poll

Expand tests for clear and drainTo to check multiple invocations

Fixed drainTo tests

Headers reference Creative Commons

improve tck javadocs; rename and add a few tests

New base class JSR166TestCase

First check-in of tests to be in tck