[msvc] upgrade to VS2012 and remove VS2008 projects
[misc] update Windows version detection
[samples] don't use hardcoded C:\ to extract the drivers

* Extract to the user dir/current dir instead in the case of Zadig/Zadic
* Closes #11
[misc] fix VS2012 warnings, update copyrights, etc.

* Fix VS2012 code analysis warnings, compile as C
* Update copyright notices
* Improve Windows version detection
* Add Zadig icon in title bar
[misc] update scripts, compile as C, bump version