8156931: java.nio.Buffer tests cleanup
Reviewed-by: alanb

8149469: ByteBuffer API and implementation enhancements for VarHandles
Reviewed-by: chegar, alanb

8065556: (bf) Buffer.position and other methods should include detail in IAE
Summary: Add messages to IAEs which have none.
Reviewed-by: alanb

7197491: update copyright year to match last edit in jdk8 jdk repository
Reviewed-by: chegar, ksrini

7199551: (bf) CharBuffer.append(CharSequence) throws BufferOverflowException for read-only buffer
Reviewed-by: iris, dxu, chegar

7190219: (bf) CharBuffer.put(String,int,int) modifies position even if BufferOverflowException thrown
Reviewed-by: alanb

6943119: Rebrand source copyright notices
Reviewed-by: darcy, weijun

6903754: (bf) Improve floating-point buffer comparison
Summary: Describe the exact behavior of {Double,Float}Buffer.{equals,compareTo}; fix non-anti-symmetric behavior of compareTo
Reviewed-by: alanb
Contributed-by: jessewilson@google.com

6795561: (bf) CharBuffer.subSequence() uses wrong capacity value for new buffer
Reviewed-by: sherman, iris

6785258: Update copyright year
Summary: Update copyright for files that have been modified starting July 2008 to Dec 2008
Reviewed-by: katleman, ohair, tbell

6593946: (bf) X-Buffer.compact() does not discard mark as specified
Summary: InvalidMarkException now correctly thrown. Thanks to keiths@redhat.com for the bug report and initial fix.
Reviewed-by: sherman, darcy

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