change internal class and object structure to use literals

[JosephLenton]

Based on this JSPerf here: http://jsperf.com/properties-vs-arrays/2 object literals are the fastest way to represent a class.

Methods will need to be re-build ahead of time, and then dynamically set to objets when they are created. They must NOT be created in the constructor!

One big issue is 'instanceof', everything will look like an object. But this is still faster.

Also need to build a real-test case testing the current implementation against a new one (a few games on PMC will do).

[JosephLenton]

Note that classes with more then around 15 methods are actually slower to create. So either find a way to create this quicker, test for a trade off, or only use this for small classes (which would make it FF only due to the method not founds needed in non-FF browsers).

If methods that only occur once were inlined, through implementing issue #4, then this could work.

[JosephLenton]

another jsperf http://jsperf.com/yet-another-object-vs-array

• objects data use literals
• objects methods are regular functions, with if statements within