Implement @MAIN, @/path/name -e selectors, make former default for now

- the default might become "*" in future, but keep things more or less
  the same as they always were for now
diff --git a/handle_event.c b/handle_event.c
index cfb2ad0..28992d4 100644
--- a/handle_event.c
+++ b/handle_event.c
@@ -426,7 +426,8 @@
 		free(syscall);
 		return NULL;
 	}
-	library_init(syscalls, "SYS", 0);
+	library_init(syscalls);
+	library_set_soname(syscalls, "SYS", 0);
 	library_symbol_init(syscall, 0, name, 0, LS_TOPLT_NONE);
 	library_add_symbol(syscalls, syscall);
 	return syscall;