Avoid using the BATCH command by loading EXTERNAL-CALLS before opening it.

Makefile.am

@@ -2,7 +2,7 @@ SUBDIRS = c
 
 scheme/load-scx.scm:
 	(echo '(user)';								\
-		echo "(batch)";							\
+		echo "(load-package 'dynamic-externals)";			\
 		echo "(open 'dynamic-externals)";				\
 		echo "(open 'external-calls)";					\
 		echo '(run ';							\
@@ -13,6 +13,5 @@ scheme/load-scx.scm:
 		echo '(config)';						\
 		echo '(load "$(prefix)/scheme/xlib/xlib-interfaces.scm")';	\
 		echo '(load "$(prefix)/scheme/xlib/xlib-packages.scm")';	\
-		echo '(batch)';							\
 	) > $@