Import specs from rubysl-zlib

[LTe]

New zlib from ruby allows streams to be processed without huge
memory growth. There is specs for new API of #inflate and #deflate
methods. Each of these methods may take a block which can process
one chunk of the stream.

Related to #1216

[headius]

I'm fine updating rubyspec with rubysl stuff that's actively maintained, but we'd need to get tags for any new failures too before merging. Perhaps you can give that a shot?

[LTe]

@headius

https://github.com/LTe/jruby/blob/zlib-specs/spec/tags/ruby/library/zlib/deflate/deflate_tags.txt
https://github.com/LTe/jruby/blob/zlib-specs/spec/tags/ruby/library/zlib/inflate/finish_tags.txt
https://github.com/LTe/jruby/blob/zlib-specs/spec/tags/ruby/library/zlib/inflate/inflate_tags.txt

[enebo]

My second comment is how do we update these periodically? I am not against doing this but we should think about documenting or automating pull various suites in.

[headius]

I'm fine pulling these in at this point. You added them to rubysl-zlib too, so thank you for that.

It's unfortunate we now have to check several dozen repositories to get the specs for these libraries.

[headius]

PR no longer merges. We will update and merge it when we can. If you can get to it, that would help us a lot.

[chrisseaton]

@eregon am I right in thinking the library specs from rubysl-zlib should now be merged from your work on RubySpec? If so this can be closed.

[eregon]

@chrisseaton Yes, except new specs added there.
I imported the new specs from rubysl-zlib in ruby/rubyspec.
They will be in jruby on the next spec merge.