title: how to make cmake find a package configuration file
body: <p>I'm trying to cmake a project which calls </p>
  
  <pre><code>find_package(Shiboken REQUIRED)
  </code></pre>
  
  <p>cmake complains about</p>
  
  <pre><code>CMake Error at CMakeLists.txt:5 (find_package):
    By not providing "FindShiboken.cmake" in CMAKE_MODULE_PATH this project has
    asked CMake to find a package configuration file provided by "Shiboken",
    but CMake did not find one.
  
    Could not find a package configuration file provided by "Shiboken" with any
    of the following names:
  
      ShibokenConfig.cmake
      shiboken-config.cmake
  
    Add the installation prefix of "Shiboken" to CMAKE_PREFIX_PATH or set
    "Shiboken_DIR" to a directory containing one of the above files.  If
    "Shiboken" provides a separate development package or SDK, be sure it has
    been installed.
  </code></pre>
  
  <p>I do have Shiboken compiled and installed to C:\Program Files\shiboken. And I can see there are cmake files like ShibokenConfig.cmake, ShibokenConfig-python2.7.cmake, ShibokenConfigVersion.cmake under folder C:\Program Files\shiboken\lib\cmake\Shiboken-1.1.2</p>
  
  <p>how do I let the cmake know it should search for ShibokenConfig.cmake in that folder?</p>