[2.3.x] + checkpoint for
issue #1527
https://java.net/jira/browse/GRIZZLY-1527
"Implement client-side Connection pool"

Share the pooled connection info
[2.3.x] + fix one findbugs issue
[2.3.x] + fix improvement #1534
https://java.net/jira/browse/GRIZZLY-1534
"Improve connection.close logging"
[2.3.x] + update javadocs
[2.3.x] + additional update for:
fix improvement #1534
https://java.net/jira/browse/GRIZZLY-1534
"Improve connection.close logging"
[2.3.x] + as per Ryan's suggestion fix MultiEndpointPool take(...) method signature