Make the executable a real Windows GUI application

Make a real Windows application, with a Windows icon embedded.

Change-Id: Ifcb2605480fb4a834495d5708394a32e37b9eed6
Customize CPack a little, get NSIS working

We want CPack to use our version, rather than the default 0.1.1, add
the license file and icon setup along with some useful links once
everything is installed.

Change-Id: I82462159e365fad6e0bbcedfbda073c3889d717c
Minor fixes for Mac packaging

Change-Id: I044842af0fd20fb029577fa22e93344e829c4f3e
More packaging tweaks for CPack

Change-Id: I9ebf9f312798995852eebca93a6b7b9d305246df