move help text from include/usage.src.h to debianutils/*.c e2fsprogs/*.c editors/*.c loginutils/*.c mailutils/*.c

Signed-off-by: Pere Orga <gotrunks@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

coreutils/length.c.disabled

@@ -5,6 +5,15 @@
 
 /* BB_AUDIT SUSv3 N/A -- Apparently a busybox (obsolete?) extension. */
 
+//usage:#define length_trivial_usage
+//usage:       "STRING"
+//usage:#define length_full_usage "\n\n"
+//usage:       "Print STRING's length"
+//usage:
+//usage:#define length_example_usage
+//usage:       "$ length Hello\n"
+//usage:       "5\n"
+
 #include "libbb.h"
 
 /* This is a NOFORK applet. Be very careful! */