added haxe.Http specification

git-svn-id: http://haxe.googlecode.com/svn/trunk@5935 f16182fa-f095-11de-8f43-4547254af6c6
ctrl + s

git-svn-id: http://haxe.googlecode.com/svn/trunk@5936 f16182fa-f095-11de-8f43-4547254af6c6
Merge branch 'haxe/master'