Fix license headers

[ghost]

From martin.grotzke on March 19, 2009 22:53:28

The java code contains wrong licence headers. Those must be changed
according to the license of this lib.

Original issue: http://code.google.com/p/memcached-session-manager/issues/detail?id=1

[ghost]

From martin.grotzke on March 22, 2009 15:04:27

Fixed, used the copyright notice from the appendix of
http://www.apache.org/licenses/LICENSE-2.0.html

Status: Fixed