Rewrite the OS X Device Information Obtainer.

For version 1.4.1 I plan to rewrite the part of the device information obtainer that gets device info for OS X, so it will use property lists instead of reading the output line by line, which will make it more reliable (even though it's already very reliable, there are a few very minor glitches on El Capitan, and this reduces the chance of misinterpreting the info to 0%).

It will also display more helpful information, and the descriptions will be more accurate.