Changed texture parameter settings, bug fixes

- You can now change the repetition and scaling of Textures (and
Animations).  Because of the nature of the resource loader this does NOT
mean that you can set the variable once and assume it will stay that
way.
- Fixed the example files to conform to the new xml specifications
- Fixed a bug where using the default "Save..." dialog wouldn't remember
the current path until you save at least once (NOT when you load for the
first time)
- Added the ability to change the UV pos/dim offset for animations