Changed initial_cache variable types from STRING to PATH

initial_cache.cmake.template

@@ -5,16 +5,16 @@
 # Windows: Download the pre-built binaries from http://sourceforge.net/projects/boost/files/boost-binaries/ for VS2013 (msvc-12 64bit).
 # Set the windows PATH variable to "<YOUR_BOOST_DIRECTORY>\lib64-msvc-12.0" and CMake will find it.
 # Linux: Boost can usually be installed via a package manager (e.g. apt-get install boost-all-dev) and this variable can be left uncommented.
-#set(BOOST_ROOT     "/home/user/boost/install"    CACHE STRING "Boost search location" FORCE)
+#set(BOOST_ROOT "/home/user/boost/install" CACHE PATH "Boost search location" FORCE)
 
 # Mechanism via ConfigLIB.cmake in 3rd party library directory
 # ==============================
 # OpenCV:
 # -------
 # Windows: Download the package from opencv.org, use 2.4.7.2 or never. It includes binaries for VS2013. Set this path accordingly.
-#set(OpenCV_DIR   "C:\\opencv\\install"   CACHE STRING "OpenCV config dir, where OpenCVConfig.cmake can be found" FORCE)
+#set(OpenCV_DIR "C:\\opencv\\install" CACHE PATH "Location of OpenCVConfig.cmake" FORCE)
 # Linux: Usually can be left blank but it can be used if OpenCV is not found.
-#set(OpenCV_DIR   "/home/user/opencv/install/share/OpenCV"   CACHE STRING "OpenCV config dir, where OpenCVConfig.cmake can be found" FORCE)
+#set(OpenCV_DIR "/home/user/opencv/install/share/OpenCV" CACHE PATH "Location of OpenCVConfig.cmake" FORCE)
 
 # Configuration options
 # ==============================