Patch from Devin Bayer to split up hash_fd.c into md5.c and sha1.c.  (I tweaked
md5_sha1_sum.c to convert some #ifdef CONFIG to if(ENABLE).)
diff --git a/Config.in b/Config.in
index 070085b..e1d5020 100644
--- a/Config.in
+++ b/Config.in
@@ -322,6 +322,7 @@
 source procps/Config.in
 source shell/Config.in
 source sysklogd/Config.in
+source libbb/Config.in
 
 menu 'Debugging Options'