#4 Enable GAC deployment

[benzhi]

Hi, I started working with NHAPI last week and it works great! I got into trouble though, when I tried to work with it in GAC, because the reflection part, which instantiates Message objects does not know about strong named assemblies. I altered three or four classes in the base assembly and now it works (at least for version 2.4, which I am currently using, but it's little work to apply the changes to the other versions too). If anyone is interested in my modifications, please let me know. And thanks of course for the library, because it saved me a lot of time and work!