trylink: produce even more info about final link stage

trylink: explain how to modify link and drastically decrease amount
  of padding (unfortunately, needs hand editing ATM).
*: add ALIGN1 / ALIGN2 to global strings and arrays of bytes and shorts

size saving: 0.5k

networking/arp.c

@@ -46,7 +46,7 @@ static int sockfd;              /* active socket descriptor     */
 static smallint hw_set;         /* flag if hw-type was set (-H) */
 static const char *device = ""; /* current device               */
 
-static const char options[] =
+static const char options[] ALIGN1 =
 	"pub\0"
 	"priv\0"
 	"temp\0"