Added capability to get Sim Jr props as java.util.Properties

git-svn-id: https://simjr.googlecode.com/svn/trunk@234 56382930-1720-11df-aca2-1133b060dc17
(1) Added a removeLabel() method to the EntityShape object.

git-svn-id: https://simjr.googlecode.com/svn/trunk@235 56382930-1720-11df-aca2-1133b060dc17
Fixed bug where EntityControllers were not being swapped correctly.

The manual entity controller previously tried to swap out only a single
other conflicting entity controller from the entity it was being applied
to. This fix means multiple existing entity controllers will be swapped
from an entity instead of just a single one.

git-svn-id: https://simjr.googlecode.com/svn/trunk@236 56382930-1720-11df-aca2-1133b060dc17
Merge remote-tracking branch 'trunk'