MGR: Use same exit confirmation dialog wording for Linux as for Windows

svn path=/trunk/boinc/; revision=23678

checkin_notes

@@ -3423,7 +3423,9 @@ Charlie 7 Jun 2011
         skip exit confirmation dialog but do shut down local client if requested 
         in most recently run exit dialog, whether or not "Remember this decision" 
         was set.
+    - MGR: Use same exit confirmation dialog wording for Linux as for Windows.
         
     clientgui/
         BOINCGUIApp.cpp, .h
         MainDocument.cpp, .h
+        DlgExitMessage.cpp

clientgui/DlgExitMessage.cpp

@@ -125,7 +125,7 @@ void CDlgExitMessage::CreateControls()
     wxFlexGridSizer* itemFlexGridSizer4 = new wxFlexGridSizer(3, 1, 0, 0);
     itemBoxSizer3->Add(itemFlexGridSizer4, 0, wxALIGN_CENTER_HORIZONTAL|wxALL, 5);
 
-#ifdef __WXMSW__
+#ifndef __WXMAC__
     strExitMessage.Printf(
         _("You have requested to exit the %s,\nwhich allows you to view and manage\nthe tasks running on your computer.\n\nIf you also want to stop running the tasks,\nchoose from the following options:"),
         pSkinAdvanced->GetApplicationName().c_str()