Improve java.util.zip compression level documentation.

The level parameter (constructors, setLevel, etc)
can be [-1..9], but the docs incorrectly stated [-1..8]
and [0..9].

Explain fully what compression level means in the Deflater
class documentation and point everything else to that
canonical source.

Change-Id: I4b76965d88f0fd0f383bb15a5259a5fa5d81f2b1
Signed-off-by: Jorrit Jongma <jorrit@jongma.org>
2 files changed