Fix the line endings on the Flash `.as` files

Many of the Flash `.as` source files have wonky DOS style line endings. Git seems to treat them as a single line, which means that when a single character changes, the diff will show the entire file as being different.

To fix them, I opened them in vim and ran:

`%s/^M/\r/g`

**Note**: You can't just type `^M`, you have to type Ctrl-V, Ctrl-M to get this magic character to appear. You'll know you did it right if you get a highlighted `^M` like this:

![vim-ctrl-v-ctrl-m](https://f.cloud.github.com/assets/353790/371371/bc378c5c-a32d-11e2-9873-a07f15d9cc12.png)

And then I ran.

`set ff=unix`