[java/cs] Added missing -D java_ver description; Started to document metadatas


git-svn-id: http://haxe.googlecode.com/svn/trunk@6265 f16182fa-f095-11de-8f43-4547254af6c6
oops


git-svn-id: http://haxe.googlecode.com/svn/trunk@6266 f16182fa-f095-11de-8f43-4547254af6c6