busybox: do not print help to fd 2, print it to fd 1
 otherwise this can break scripts

diff --git a/libbb/appletlib.c b/libbb/appletlib.c
index 86f8508..06a83e5 100644
--- a/libbb/appletlib.c
+++ b/libbb/appletlib.c
@@ -638,6 +638,7 @@
 		/* leading tab and room to wrap */
 		output_width -= MAX_APPLET_NAME_LEN + 8;
 
+		dup2(1, 2);
 		full_write2_str(bb_banner); /* reuse const string... */
 		full_write2_str(" multi-call binary\n"
 		       "Copyright (C) 1998-2008 Erik Andersen, Rob Landley, Denys Vlasenko\n"