fixing bugscape #2469 - setuprsc.dll contains windows extended dialogs. sr=vishy r=dveditz affects only windows platforms

xpinstall/wizard/windows/setuprsc/setuprsc.rc

@@ -67,7 +67,7 @@ BEGIN
                     WS_EX_STATICEDGE
 END
 
-DLG_SETUP_TYPE DIALOGEX 51, 56, 315, 205
+DLG_SETUP_TYPE DIALOG DISCARDABLE  51, 56, 315, 205
 STYLE DS_MODALFRAME | WS_POPUP | WS_VISIBLE | WS_CAPTION | WS_SYSMENU
 FONT 8, "MS Sans Serif"
 BEGIN
@@ -250,9 +250,9 @@ BEGIN
     CONTROL         "",IDC_GAUGE_ARCHIVE,"GaugeArchive",0x0,9,21,175,11
 END
 
-DLG_ADVANCED_SETTINGS DIALOGEX 51, 56, 315, 205
+DLG_ADVANCED_SETTINGS DIALOG DISCARDABLE  51, 56, 315, 205
 STYLE DS_MODALFRAME | WS_POPUP | WS_VISIBLE | WS_CAPTION | WS_SYSMENU
-FONT 8, "MS Sans Serif", 0, 0, 0x1
+FONT 8, "MS Sans Serif"
 BEGIN
     EDITTEXT        IDC_EDIT_PROXY_SERVER,147,57,152,12,ES_AUTOHSCROLL
     EDITTEXT        IDC_EDIT_PROXY_PORT,147,74,152,12,ES_AUTOHSCROLL
@@ -307,9 +307,9 @@ BEGIN
     DEFPUSHBUTTON   "&Back",IDWIZBACK,162,139,53,14
 END
 
-DLG_DOWNLOAD_OPTIONS DIALOGEX 51, 56, 315, 205
+DLG_DOWNLOAD_OPTIONS DIALOG DISCARDABLE  51, 56, 315, 205
 STYLE DS_MODALFRAME | WS_POPUP | WS_VISIBLE | WS_CAPTION | WS_SYSMENU
-FONT 8, "MS Sans Serif", 0, 0, 0x1
+FONT 8, "MS Sans Serif"
 BEGIN
     LTEXT           "",IDC_MESSAGE1,101,90,204,33,NOT WS_GROUP
     CONTROL         "Save installer files locally",