Cleaned up SteamTest
Revamped the SteamApps test
Refactored SteamAppsTest out to its own file and hooked up callbacks
Refactored SteamClientTest out to its own file
Removed #if _PS3 guard around SteamApps callbacks

The Steamworks SDK says that they are both only for PS3.
The Steamworks SDK might be wrong.
Some Cleanup in SteamTest and SteamClientTest
Refactored SteamFriendsTest out to its own file
Refactored SteamUtilsTest out to its own file
Refactored SteamUserTest out to its own file
Refactored quitting the application out to its own script

Thus if an unhandled exception is thrown in Awake() or Start()
then it does not cause you to be unable to... quit the application.
Made switching between test pages work with the arrow keys
Added a second scene to test switching between scenes
Made the tests non static so they hold their state better
Minor Cleanup in SteamUtilsTest
Created SteamRemoteStorageTest
Made SteamFriendsTest pages work like SteamRemoteStorage
Moved SceneSwitcher and QuitScript into the Scripts folder
Converted to UNIX newlines
Made HSteamPipe and HSteamUser type safe
Made AppId_t type safe