Enable CTK_INSTALL_{INCLUDE/LIB}_DIR in CTKConfig.cmake.

CTKConfig.cmake.in

@@ -110,8 +110,8 @@ SET(CTK_CMAKE_UTILITIES_DIR "@CTK_CMAKE_UTILITIES_DIR_CONFIG@")
  
 # TODO Relative install paths in the CTK install tree
 #SET(CTK_INSTALL_BIN_DIR "@CTK_INSTALL_BIN_DIR@")
-#SET(CTK_INSTALL_INCLUDE_DIR "@CTK_INSTALL_INCLUDE_DIR@")
-#SET(CTK_INSTALL_LIB_DIR "@CTK_INSTALL_LIB_DIR@")
+SET(CTK_INSTALL_INCLUDE_DIR "@CTK_INSTALL_INCLUDE_DIR@")
+SET(CTK_INSTALL_LIB_DIR "@CTK_INSTALL_LIB_DIR@")
 #SET(CTK_INSTALL_PACKAGE_DIR "@CTK_INSTALL_PACKAGE_DIR@")
  
 # A CTK install tree always provides one build configuration. A CTK