Branch: Compact pdf417

Hello, I've updated the .NET code with Guenther Grau's Java code for PDF417.  Details are here: https://groups.google.com/forum/?fromgroups=#!topic/zxing/0mCnxpM7MYQ

Let me know if anything needs changing or whatnot.  I've also got a bunch of Patches.

-Stephen Furlani