Physics entities can now use multiple fixtures

This fixes bug #79. Physics enties can now have multiple fixtues each
with it's own polygon shape. Each polygon is still limited to 8
verticies as Box2D suggests.
Revert "Physics entities can now use multiple fixtures"

This reverts commit 79bc2e8ed1bd78514fa326ab0c8fb5385ee12b40.
Physics entities should now be able to have mulitple fixtures

This fixes bug #79. Physics entities should now be able to have multiple
fixtues each with it's own polygon shape. Each polygon is still limited
to 8 verticies as Box2D suggests. The commenting is so you can see
what's going, obviously it needs editing.
just updating the update
Merge branch 'master' of https://github.com/ivansafrin/Polycode
Merge branch 'master' of https://github.com/ivansafrin/Polycode
Merge remote-tracking branch 'upstream/master'
2D Physics Merge from Doomlaser and fidelity3

This merges our changes to the 2d Phyiscs module into one
Tested fix

Just a quick update. My code been tested, and now works.
Note: I have not tested Doomlaser's
Comments cleaned up
more comments
Merge pull request #191 from Fidelity3/master

Many box2d Functions added as well as multiple fixtures per body