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

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

archival/unzip.c

@@ -19,6 +19,19 @@
  * Zip64 + other methods
  */
 
+//usage:#define unzip_trivial_usage
+//usage:       "[-opts[modifiers]] FILE[.zip] [LIST] [-x XLIST] [-d DIR]"
+//usage:#define unzip_full_usage "\n\n"
+//usage:       "Extract files from ZIP archives\n"
+//usage:     "\nOptions:"
+//usage:     "\n	-l	List archive contents (with -q for short form)"
+//usage:     "\n	-n	Never overwrite files (default)"
+//usage:     "\n	-o	Overwrite"
+//usage:     "\n	-p	Send output to stdout"
+//usage:     "\n	-q	Quiet"
+//usage:     "\n	-x XLST	Exclude these files"
+//usage:     "\n	-d DIR	Extract files into DIR"
+
 #include "libbb.h"
 #include "archive.h"