msvc2 compilable on debian & tests fixed for VS2012

Hey there,

I just made minor changes to not break anymore the compilation on other systems.
Also, I successfully compiled this version on a debian7 x86 with gcc v4.7.2 without any problems.
Last but not least, I've fixed the tests files to be compilable by VS2012 ; I've also added one project per test to the capstone-win32-vc solution.

Cheers,
0vercl0k