zlib 1.2.3 -> 1.2.5

[Xueming Shen]

Hi,

Here is the webrev for upgrading the bundled zlib from 1.2.3 to 1.2.5 
for JDK8

http://cr.openjdk.java.net/~sherman/7110149/webrev

The changes to the original zlib source code (other than the copyright 
attachment)
is at

http://cr.openjdk.java.net/~sherman/7110149/webrev/src/share/native/java/util/zip/zlib-1.2.5/patches/ChangeLog_java.html

For you reference, the 1.2.3 upgrade webrev can be found at

http://cr.openjdk.java.net/~sherman/zlib123/webrev

Thanks,
Sherman