Madd's Improvements, specific branch

Here are quite a few of my changes.

Note that you will need Xcode 4.6 or later to build it, and it'll run on Lion (10.7) or later. Objective-C code has been migrated to ARC and "Modern Syntax" by Xcode 5.

10.7 or later is required to use this version of the driver. If you want to build 10.7 and later support, you will need Xcode 4.6 and the 10.7 SDK.

The old, individual projects were merged into one big Xcode project. Xcode 4/5 generated files are ignored and deleted: you may want to temporarily protect said files before merging this.