Updated installer package GUID, updated docs for 5.0.3.

Author: satherton

packaging/msi/FDBInstaller.wxs

@@ -32,7 +32,7 @@
 
 <Wix xmlns='http://schemas.microsoft.com/wix/2006/wi'>
   <Product Name='$(var.Title)'
-           Id='{6B9B840B-A6E2-4E07-B41A-86910C574923}'
+           Id='{C756534F-D7CA-4B95-95C6-6F5C7AB9342D}'
            UpgradeCode='{A95EA002-686E-4164-8356-C715B7F8B1C8}'
            Version='$(var.Version)'
            Manufacturer='$(var.Manufacturer)'