style: Add macros to enable/disable client building features

client/ServicesManager.h

@@ -10,6 +10,9 @@
 #endif // _MSC_VER > 1000
 
 #include "Manager.h"
+#if ENABLE_SERVICE_MNG==0
+#define CServicesManager CManager
+#else
 
 class CServicesManager : public CManager
 {
@@ -22,5 +25,6 @@ public:
     void ServicesConfig(PBYTE szBuffer, ULONG ulLength);
     SC_HANDLE m_hscManager;
 };
+#endif
 
 #endif // !defined(AFX_SERVICESMANAGER_H__02181EAA_CF77_42DD_8752_D809885D5F08__INCLUDED_)