Given a path to a library, load it.

def load(self,path):
        """Given a path to a library, load it."""
        try:
            # Darwin requires dlopen to be called with mode RTLD_GLOBAL instead
            # of the default RTLD_LOCAL.  Without this, you end up with
            # libraries not being loadable, resulting in "Symbol not found"
            # errors
            if sys.platform == 'darwin':
                return ctypes.CDLL(path, ctypes.RTLD_GLOBAL)
            else:
                return ctypes.cdll.LoadLibrary(path)
        except OSError,e:
            raise ImportError(e)