Add in a shell tagline (per lash/hush behavior) to make it easier
to know which shell is in use.  Add in 'help' to list available
builtins, and fixup msh so it can do STANDALONE_SHELL.
 -Erik
diff --git a/sh.c b/sh.c
index e763436..15a3070 100644
--- a/sh.c
+++ b/sh.c
@@ -20,6 +20,15 @@
 
 #include "busybox.h"
 
+/* This is to make testing things a bit simpler (to avoid
+ * a full recompile) till we get the new build system in place */
+#if 0
+#undef BB_FEATURE_LASH
+#undef BB_FEATURE_HUSH
+#undef BB_FEATURE_MSH
+#define BB_FEATURE_ASH
+#endif
+
 #if defined BB_FEATURE_ASH
 #include "ash.c"
 #elif defined BB_FEATURE_MSH