Reviewed-by: alanb, malenkov, mullan

Reviewed-by: alanb

Summary: cache a copy of the char[] to use with toString() and clear it when ever the sb content is modified
Reviewed-by: alanb, plevart, mduigou, forax

Reviewed-by: martin, alanb, ulfzibis, mduigou
Contributed-by: NStuart Marks &lt;stuart.marks@oracle.com&gt;, Henry Jen <henry.jen@oracle.com>

Reviewed-by: ohair

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: xdono

Reviewed-by: mbykov

Summary: Rewrite lastIndexOf for performance and correctness
Reviewed-by: sherman
Contributed-by: NReviewed by Ulf Zibis <ulf.zibis@gmx.de>

Reviewed-by: darcy, weijun

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