Combine snapshot classes into a template class

installer/src/custom-action/close_application.cpp

 /**
  * \file close_application.cpp
  */
 
 #include <algorithm>
 
 #include "session.h"
 #include "property.h"
 #include "database.h"
 #include "process.h"
 #include "interaction.h"
 #include "custom-i18n.h"
 
 const wchar_t * ie_names[] = { L"IExplore.exe" } ;
 const wchar_t * engine_names[] = { L"AdblockPlusEngine.exe" } ;
 const wchar_t * abp_module_names[] = { L"AdblockPlus32.dll", L"AdblockPlus64.dll" } ;
 
-
 //-------------------------------------------------------
 //-------------------------------------------------------
 class IE_Closer
 {
-  Snapshot snapshot ;
+  Process_Snapshot snapshot ;
 
   Process_Closer ie_closer ;
 
   Process_Closer engine_closer ;
 
 public:
   IE_Closer()
     : snapshot(), ie_closer( snapshot, ie_names, abp_module_names), engine_closer( snapshot, engine_names )
   {}
 
@@ skipping 417 matching lines @@
   return TRUE ;
 }
 
 /**
  * Windows_List
  */
 class Window_List {
 public:
   void enumerate_top_level();
 };