Clarified states a little

Fixed include order and double include prevention

--HG--
extra : convert_revision : svn%3A39bc706e-5318-0410-9160-8a85361fbb7c/trunk%40228

core/sm_srvcmds.h

@@ -1,7 +1,10 @@
-#include "sourcemm_api.h"
-#include <convar.h>
+#ifndef _INCLUDE_SOURCEMOD_SERVERCOMMANDS_H_
+#define _INCLUDE_SOURCEMOD_SERVERCOMMANDS_H_
+
 #include "sourcemod.h"
 #include "PluginSys.h"
+#include "sourcemm_api.h"
+#include <convar.h>
 
 using namespace SourceMod;
 
@@ -13,4 +16,6 @@ public: // IConCommandBaseAccessor
 	virtual bool RegisterConCommandBase(ConCommandBase *pCommand);
 public: // SMGlobalClass
 	virtual void OnSourceModStartup(bool late);
-};
+};
+
+#endif //_INCLUDE_SOURCEMOD_SERVERCOMMANDS_H_