- don't hardcode libdl

Index: example/Makefile.in
--- example/Makefile.in.orig
+++ example/Makefile.in
@@ -500,7 +500,7 @@ m17n_conv_SOURCES = mconv.c
 m17n_conv_LDADD = ${common_ldflags}
 X_LD_FLAGS = ${X_PRE_LIBS} ${X_LIBS} @XAW_LD_FLAGS@ @X11_LD_FLAGS@ ${X_EXTRA_LIBS}
 m17n_edit_SOURCES = medit.c
-m17n_edit_LDADD = ${X_LD_FLAGS} ${common_ldflags_gui} -ldl
+m17n_edit_LDADD = ${X_LD_FLAGS} ${common_ldflags_gui}
 m17n_view_SOURCES = mview.c
 m17n_view_LDADD = ${X_LD_FLAGS} ${common_ldflags_gui}
 m17n_dump_SOURCES = mdump.c