Fix missing const-qualifiers in engine code. Fix qboolean/int mixing in interface implementations(int is preferred). Replace long by int in COM_RandomLong.

engine/server/sv_phys.c

@@ -2002,7 +2002,7 @@ static server_physics_api_t gPhysicsAPI =
 	SV_LinkEdict,
 	SV_GetServerTime,
 	SV_GetFrameTime,
-	SV_ModelHandle,
+	(void*)SV_ModelHandle,
 	SV_GetHeadNode,
 	SV_ServerState,
 	Host_Error,
@@ -2074,4 +2074,4 @@ qboolean SV_InitPhysicsAPI( void )
 
 	// physic interface is missed
 	return true;
-}
+}