core: Add client id to MultiTargetFilter forward (#1070)

* Added client id to MultiTargetFilter forward.

* Add CapabilityProvider for MultiTargetFilter client param

core/logic/smn_players.cpp

@@ -64,10 +64,13 @@ static const int kActivityAdmins = 4;			// Show admin activity to admins anonymo
 static const int kActivityAdminsNames = 8;		// If 4 is specified, admin names will be shown.
 static const int kActivityRootNames = 16;		// Always show admin names to root users.
 
+#define FEATURECAP_MULTITARGETFILTER_CLIENTPARAM    "SourceMod MultiTargetFilter ClientParam"
+
 class PlayerLogicHelpers : 
 	public SMGlobalClass,
 	public IPluginsListener,
-	public ICommandTargetProcessor
+	public ICommandTargetProcessor,
+	public IFeatureProvider
 {
 	struct SimpleMultiTargetFilter
 	{
@@ -141,6 +144,7 @@ public: //ICommandTargetProcessor
 
 				smtf->fun->PushString(info->pattern);
 				smtf->fun->PushCell(ahc.getClone());
+				smtf->fun->PushCell(info->admin);
 				cell_t result = 0;
 				if (smtf->fun->Execute(&result) != SP_ERROR_NONE || !result)
 					return false;
@@ -185,6 +189,7 @@ public: //SMGlobalClass
 	void OnSourceModAllInitialized()
 	{
 		pluginsys->AddPluginsListener(this);
+		sharesys->AddCapabilityProvider(NULL, this, FEATURECAP_MULTITARGETFILTER_CLIENTPARAM);
 	}
 
 	void OnSourceModShutdown()
@@ -194,6 +199,7 @@ public: //SMGlobalClass
 			playerhelpers->UnregisterCommandTargetProcessor(this);
 			filterEnabled = false;
 		}
+		sharesys->DropCapabilityProvider(NULL, this, FEATURECAP_MULTITARGETFILTER_CLIENTPARAM);
 	}
 
 public: //IPluginsListener
@@ -211,6 +217,13 @@ public: //IPluginsListener
 			}
 		}
 	}
+
+public: //IFeatureProvider
+
+	FeatureStatus GetFeatureStatus(FeatureType type, const char *name)
+	{
+		return FeatureStatus_Available;
+	}
 } s_PlayerLogicHelpers;
 
 static cell_t