Update setup.nsi

- Always display all language choices to fix #461
- Stop recursively removing installation directory as that
  is not a safe operation.  This may leave the installation
  directory after uninstallation but should be empty.  Fix #456.

setup.nsi

@@ -222,13 +222,6 @@ Section "Uninstall"
   !insertmacro MUI_STARTMENU_GETFOLDER Application $StartMenuFolder
   RMDir /r "$SMPROGRAMS\$StartMenuFolder"
 
-  ; Delete the Install Directory and vendor directory (if empty)
-  Push $R0
-  RMDir /r "$INSTDIR" ;NSIS seems to recomend against this... look into options
-  ${GetParent} "$INSTDIR" $R0
-  RMDir $R0
-  Pop $R0
-
   ; Remove registry keys and vendor keys (if empty)
   DeleteRegKey  SHCTX "${BASEREGKEY}"
   DeleteRegKey /ifempty SHCTX "${VENDORREGKEY}"
@@ -246,6 +239,8 @@ Function .onInit
     SetRegView 32
   !endif
   !insertmacro MULTIUSER_INIT
+  ; it appears that the languages shown may not always be filtered correctly
+  !define MUI_LANGDLL_ALLLANGUAGES
   !insertmacro MUI_LANGDLL_DISPLAY 
 FunctionEnd