move help text from include/usage.src.h to coreutils/*.c

Signed-off-by: Pere Orga <gotrunks@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/coreutils/cal.c b/coreutils/cal.c
index f18c161..ef1c29b 100644
--- a/coreutils/cal.c
+++ b/coreutils/cal.c
@@ -16,6 +16,15 @@
  *
  * Major size reduction... over 50% (>1.5k) on i386.
  */
+
+//usage:#define cal_trivial_usage
+//usage:       "[-jy] [[MONTH] YEAR]"
+//usage:#define cal_full_usage "\n\n"
+//usage:       "Display a calendar\n"
+//usage:     "\nOptions:"
+//usage:     "\n	-j	Use julian dates"
+//usage:     "\n	-y	Display the entire year"
+
 #include "libbb.h"
 #include "unicode.h"