ENH: Convert Modules/Platform specification of system search paths to use CMAKE_SYSTEM_PREFIX_PATH when possible.

Modules/Platform/WindowsPaths.cmake

@@ -1,17 +1,31 @@
 GET_FILENAME_COMPONENT(_CMAKE_INSTALL_DIR "${CMAKE_ROOT}" PATH)
 GET_FILENAME_COMPONENT(_CMAKE_INSTALL_DIR "${_CMAKE_INSTALL_DIR}" PATH)
 
-# the /bin, /lib and /include dirs are mainly for mingw cross compiler users 
-# under Linux who use CMAKE_FIND_ROOT_PATH
-SET(CMAKE_SYSTEM_INCLUDE_PATH ${CMAKE_SYSTEM_INCLUDE_PATH}  
-    "$ENV{ProgramFiles}" "${CMAKE_INSTALL_PREFIX}/include" "${_CMAKE_INSTALL_DIR}/include" /include)
+# List common installation prefixes.  These will be used for all
+# search types.
+LIST(APPEND CMAKE_SYSTEM_PREFIX_PATH
+  # Standard
+  "$ENV{ProgramFiles}"
+
+  # CMake install location
+  "${_CMAKE_INSTALL_DIR}"
+
+  # Project install destination.
+  "${CMAKE_INSTALL_PREFIX}"
+
+  # MinGW (useful when cross compiling from linux with CMAKE_FIND_ROOT_PATH set)
+  /
+  )
+
+LIST(APPEND CMAKE_SYSTEM_INCLUDE_PATH
+  )
 
 # mingw can also link against dlls which can also be in /bin, so list this too
-SET(CMAKE_SYSTEM_LIBRARY_PATH ${CMAKE_SYSTEM_LIBRARY_PATH} 
-   "$ENV{ProgramFiles}" 
-   "${CMAKE_INSTALL_PREFIX}/lib" "${CMAKE_INSTALL_PREFIX}/bin" 
-   "${_CMAKE_INSTALL_DIR}/lib" "${_CMAKE_INSTALL_DIR}/bin"
-   /lib /bin )
+LIST(APPEND CMAKE_SYSTEM_LIBRARY_PATH
+  "${CMAKE_INSTALL_PREFIX}/bin"
+  "${_CMAKE_INSTALL_DIR}/bin"
+  /bin
+  )
 
-SET(CMAKE_SYSTEM_PROGRAM_PATH ${CMAKE_SYSTEM_PROGRAM_PATH} 
-   "$ENV{ProgramFiles}" "${CMAKE_INSTALL_PREFIX}/bin" "${_CMAKE_INSTALL_DIR}/bin" /bin)
+LIST(APPEND CMAKE_SYSTEM_PROGRAM_PATH
+  )