Implement static array literals : DIP34

Add the syntax <code>[1, 2, 3]s</code> for static array literals. I'm sure it's far from perfect but it's a start.
See also DIP34 and <a href="http://forum.dlang.org/thread/tizepidvtrraxsvcfpxc@forum.dlang.org?page=3#post-mnmotjaywyewdcbhtrgy:40forum.dlang.org">the thread in the NG</a>.
@9rnsr : Could you take a look at it?

Next step would be to add auto determination of static array dimension with <code>int[$] arr = [1, 2, 3];</code>
See: https://github.com/Dgame/dmd/commit/12ac0413cb29c6015c40d5218c7b691a7dcd6143