contrib/autostyle replaced io.popen functions with wrapper

contrib/color_profile_manager    to properly quote windows commands so
contrib/fujifilm_dynamic_range   that they are sanitized for special
contrib/fujifilm_ratings         characters and spaces
contrib/geoJSON_export
contrib/geoToolbox
contrib/image_stack
contrib/image_time
contrib/kml_export
official/enfuse
tools/executable_manager
tools/get_lib_manpages
tools/get_libdoc

contrib/kml_export.lua

@@ -343,7 +343,7 @@ if dt.configuration.running_os == "windows" then
 elseif dt.configuration.running_os == "macos" then
   defaultDir =  os.getenv("HOME")
 else
-  local handle = io.popen("xdg-user-dir DESKTOP")
+  local handle = dsys.io_popen("xdg-user-dir DESKTOP")
   defaultDir = handle:read()
   handle:close()
 end