Commit 6 on 6 to fix reentrance (incomplete Zlib header or validation bytes)...

Commit 6 on 6 to fix reentrance (incomplete Zlib header or validation bytes) in mod_deflate's output and input filters.
PR 46146 (patches from duplicated PR 55666)

Ignore empty buckets and split buckets longer than INT_MAX (since zlib uses 32-bit ints only) in all filters.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1572671 13f79535-47bb-0310-9956-ffa450edef68