minor gc optimization: better DefaultHttpHeaders.iterator()
minor gc optimization: better DefaultSpdyHeaders.iterator()
Add HttpHeaders.contains(name, value, ...) to save creation of LinkedList for simple checks
bring back entries()
Merge pull request #1918 from wgallagher/entries

bring back entries()
Fix compile error
copy all sliced buffers, fixes #1848
No need to slice before copy. Part of #1848
Merge remote-tracking branch: upstream/master