Review request for 6819122

[Mandy Chung]

6819122: DefaultProxySelector should lazily initialize the Pattern 
object and the NonProxyInfo objects

Webrev at:
  http://cr.openjdk.java.net/~mchung/6819122/webrev.00/

Details:
1. The Pattern object is only used for checking a IPv6 loopback 
address.   The current fix is to create a Pattern object for every check 
instead of caching it.   The other alternative is to cache the Pattern 
object at the first time it is needed.   Do you believe typically 
applications will hit this path frequently such that caching the Pattern 
object is needed?
  
2. Move the static NonProxyInfo fields into the NonProxyInfo classes so 
that they will only be initialized when it is needed.

Thanks
Mandy