JS: import of jaamsim project changes

- new VP8-based video recorder/screen capture implementation
- new implementation of Vec[234]d and Mat4d classes
- removal of dependency on vecmath lib
- Beginning to better separate DisplayModel from graphics drawing

Signed-off-by: Harvey Harrison <harvey.harrison@ausenco.com>
JS: remove the vecmath jarfile, we no longer depend on it

Signed-off-by: Harvey Harrison <harvey.harrison@ausenco.com>