Reviewed-by: tbell

Summary: These changes create a preference for the newer 6.1 SDK on Windows.
Reviewed-by: tbell

Summary: Update copyright for files that have been modified in 2009, up to 03/09
Reviewed-by: katleman, tbell, ohair

Reviewed-by: tbell

Reviewed-by: alanb

Reviewed-by: vinnie
Contributed-by: cquinn@google.com

6808647: (file) Paths.get("C:").newDirectoryStream() iterates over Path elements with additional slash [win]
6808648: (file) Files.walkFileTree should obtain file attributes during iteration [win]
Reviewed-by: sherman

6676425: Opensource unit/regression tests for java.util.regex
Summary: Added "named capturing group" into regex. Moved most of reg/unit tests to openjdk.
Reviewed-by: alanb, okutsu

Summary: Replace subclass audits synchronization with ConcurrentHashMap with weakly referenced Class keys
Reviewed-by: peterjones, dholmes, martin

Summary: A null hostname should be regarded as a loopback address.
Reviewed-by: weijun

Reviewed-by: xuelei, mullan

Reviewed-by: xuelei

Reviewed-by: xuelei

Reviewed-by: xuelei

Reviewed-by: vinnie

Summary: do not try to read zero byte from a InputStream, and do always return immediately for zero byte reading in a InputStream implementation.
Reviewed-by: weijun

Summary: replace sun.misc.Cache with sun.security.util.Cache
Reviewed-by: weijun

6800805: java.net.NetworkInterface.getNetworkInterfaces() does not list IPv6 network interfaces correctly
Reviewed-by: jccollet

4313887: New I/O: Improved filesystem interface
4607272: New I/O: Support asynchronous I/O
Reviewed-by: sherman, chegar

Reviewed-by: alanb
Contributed-by: christos@zoulas.com

Summary: These changes will enable inclusion of sa-jdi.jar and sawindbg.dll into Windows JDK bundle.
Reviewed-by: never, jjh, alanb