As I suspected it, I oversaw some build output. Now I have all the artifacts generated (inclusive the opengl32.dll).
Actually I've just copied the dll's into the working directory of my application, and thats it. It overrides the dll that resides in win system directories.
Now I have the folloving opengl info (GL_VENDOR,GL_RENDERER,GL_VERSION):
VMware, Inc. Gallium 0.4 on softpipe 2.1 Mesa 7.10.3
It works really fine!
Thanks for the help!