Nvidia's 270.xx.yy driver series fix the glMapBuffer alignment issues that caused major
performance problems. If the user is using an older driver we now drop the VBO instead of using
doublebuffered loading, which means that we fall back to the current behavior(no dynamic VBO) as
needed. Dynamic VBOs are needed on Nvidia drivers for GL_ARB_instanced_arrays.

wined3d: Use surface_load_location() instead of surface_internal_preload() in wined3d_device_update_surface().

kernel32: Create an orphaned process in exec_process so that all initialization is done anew in the child process.