Summary: Minor code changes to cleanup warnings in java.util.*
Reviewed-by: mduigou, naoto, smarks
Contributed-by: NRemi Forax <forax@univ-mlv.fr>

Reviewed-by: alanb, dholmes, mduigou

Reviewed-by: mduigou, alanb, dholmes
Contributed-by: darryl.mocek@oracle.com

Reviewed-by: mduigou
Contributed-by: darryl.mocek@oracle.com

6546713: link the word (optional) in exception specifications to the text which provides explanation and context.
Reviewed-by: dholmes, dl

Reviewed-by: dholmes

Reviewed-by: darcy, alanb

Reviewed-by: mduigou, alexp

Reviewed-by: alanb, dholmes, chegar, forax

Reviewed-by: dholmes, chegar, mduigou

Reviewed-by: xdono

Reviewed-by: darcy, lancea, alanb, briangoetz, mduigou, mchung

Reviewed-by: chegar, dholmes

Summary: Cache fields in locals; small javadoc clarifications
Reviewed-by: emcmanus, dholmes, forax, dl

Reviewed-by: darcy, weijun

Summary: Easy port of timsort from android
Reviewed-by: martin