Reviewed-by: alanb, chegar

Summary: Performance improvements for double/float -> String and decimal/hex String -> double/float conversions.
Reviewed-by: martin, iris
Contributed-by: NSergey Kuksenko &lt;sergey.kuksenko@oracle.com&gt;, Brian Burkhalter &lt;brian.burkhalter@oracle.com&gt;, Dmitry Nadezhin &lt;dmitry.nadezhin@oracle.com&gt;, Olivier Lagneau <olivier.lagneau@oracle.com>

Summary: Append 4 chars instead of the string "null"
Reviewed-by: mduigou, forax, jgish

Summary: Fix and optimize codePointAt, codePointBefore and similar methods
Reviewed-by: sherman, okutsu, ulfzibis, kizune

Summary: Add blanket null-handling statement to StringBuilder and StringBuffer
Reviewed-by: mduigou

Summary: use a common javadoc style in the String classes
Reviewed-by: darcy

Summary: It is not necessary to extract the value array with toCharArray. The value array can now be used directly.
Reviewed-by: alanb

Summary: update StringBuilder & StringBuffer to consistently handle forwarding to AbstractStringBuilder. Some additional cleanup (removal of refs to sub-classes from AbstractStringBuilder)
Reviewed-by: chegar, alanb, mduigou

Reviewed-by: coffeys

Summary: add usage note to AbstractStringBuilder ensureCapacity()
Reviewed-by: mduigou, dholmes, chegar

Reviewed-by: alanb

Reviewed-by: xdono

6992121: StringBuilder.ensureCapacity(int minCap) throws OutOfMemoryError with minCap=Integer.MIN_VALUE
Reviewed-by: dholmes, alanb

Summary: let arraycopy throw AIOOBE for invalid negative length
Reviewed-by: chegar, forax

Summary: Move isBmpCodePoint from sun.nio.cs.Surrogate to Character
Reviewed-by: sherman
Contributed-by: NUlf Zibis <ulf.zibis@gmx.de>

Reviewed-by: darcy, weijun

Summary: make sure to grow with size => size * 2 + 2
Reviewed-by: dholmes, chegar, ohair

Summary: Write overflow-conscious array resizing code
Reviewed-by: chegar

Summary: Update for files that have been modified starting July 2008
Reviewed-by: ohair, tbell

Summary: Major spec rework
Reviewed-by: alanb