title: Cmake changes breaking builds
body: <p>When I install a library, it goes to <code>${CMAKE_INSTALL_PREFIX}</code>.<br>
  When I <code>find_package(</code> a library, it searches <code>${CMAKE_INSTALL_PREFIX}</code>.</p>
  
  <p>In windows, <a href="https://cmake.org/cmake/help/v3.6/variable/CMAKE_INSTALL_PREFIX.html" rel="nofollow noreferrer">cmake 3.6</a> <code>${CMAKE_INSTALL_PREFIX}</code> defaults to <code>c:\Program Files</code>.  This has worked well. However in <a href="https://cmake.org/cmake/help/v3.7/variable/CMAKE_INSTALL_PREFIX.html" rel="nofollow noreferrer">cmake 3.7</a> <code>${CMAKE_INSTALL_PREFIX}</code> defaults to <code>c:\Program Files\${PROJECT_NAME}</code>. </p>
  
  <p>Now when I install library <code>A</code>, it goes to <code>C:\Program Files\A</code>.<br>
  When I <code>find_package(</code> library <code>A</code> from library <code>B</code>, it searches <code>C:\Program Files\B</code>. </p>
  
  <p>Now I can't find my dependancies anymore.  If I need to specify the exact path <code>A</code> was installed to, then I really don't get anything out of <code>find_package(</code> anymore.  Am I missing something?</p>