Bugfix: Only include ./bundled/setup_bundled.cmake

Remove a stray globbing expression that is not necessary any more and that
indeed leads to a subtle issue when configuring in-source with
  $ cmake .

In this case ./bundled/cmake_install.cmake was accidentally picked up
leading to a file permission error if CMAKE_INSTALL_PREFIX was left at the
default /usr/local
Merge pull request #148 from tamiko/fix_bundled_configuration

Bugfix: Only include ./bundled/setup_bundled.cmake