Various changes:

Added save romdir option, smooth fullscreen scalers, changed some menu controls to be more intuitive, and changed the look of the menu.
![screenshot033](https://f.cloud.github.com/assets/2839014/1949273/cc855ae2-80f6-11e3-9bd2-0cd32abe6635.png)
![screenshot034](https://f.cloud.github.com/assets/2839014/1949274/cc873f7e-80f6-11e3-80d4-a3336bc7f0f8.png)
![screenshot035](https://f.cloud.github.com/assets/2839014/1949275/cc8a94da-80f6-11e3-934d-1b6080f2c805.png)