CPackWIX: Support binary-only WiX installations

Also fix URLUPDATEINFO -> ARPURLUPDATEINFO reference
in CPACK_WIX_PROPERTY_<PROPERTY> examples.

Reviewed-by: Nils Gladitz <nilsgladitz@gmail.com>

Modules/CPackWIX.cmake

@@ -234,7 +234,7 @@
 #  * ARPCOMMENTS - Comments
 #  * ARPHELPLINK - Help and support information URL
 #  * ARPURLINFOABOUT - General information URL
-#  * URLUPDATEINFO - Update information URL
+#  * ARPURLUPDATEINFO - Update information URL
 #  * ARPHELPTELEPHONE - Help and support telephone number
 #  * ARPSIZE - Size (in kilobytes) of the application
 
@@ -256,14 +256,14 @@ if(NOT CPACK_WIX_ROOT)
 endif()
 
 find_program(CPACK_WIX_CANDLE_EXECUTABLE candle
-  PATHS "${CPACK_WIX_ROOT}/bin")
+  PATHS "${CPACK_WIX_ROOT}" PATH_SUFFIXES "bin")
 
 if(NOT CPACK_WIX_CANDLE_EXECUTABLE)
   message(FATAL_ERROR "Could not find the WiX candle executable.")
 endif()
 
 find_program(CPACK_WIX_LIGHT_EXECUTABLE light
-  PATHS "${CPACK_WIX_ROOT}/bin")
+  PATHS "${CPACK_WIX_ROOT}" PATH_SUFFIXES "bin")
 
 if(NOT CPACK_WIX_LIGHT_EXECUTABLE)
   message(FATAL_ERROR "Could not find the WiX light executable.")