Inflater/Deflater improvements

[Clemens Eisserer]

Hi,

I've written some patches for Inflater/Deflater about a year ago with
Dave Bristor as contact point, however I was in hurry and suspended
work on it back then.

I would be happy if somebody could have a look at:
https://bugs.openjdk.java.net/show_bug.cgi?id=100009

... the sooner the stuff is in ... the less chance do regressions have
to hide ;)

Thank you in advance, Clemens