top(1): increase number of columns for memory

The original intention was 4 columns but with a usable a result. In
practice this was not the case. Increase the number of columns to 5
until humanize_number learns alternative ways of presenting the number.

Requested by:	many
Ref D15801

usr.bin/top/machine.c

@@ -388,7 +388,7 @@ format_header(const char *uname_field)
 		sbuf_printf(header, "%*s", ps.jail ? TOP_JID_LEN : 0,
 									ps.jail ? " JID" : "");
 		sbuf_printf(header, " %-*.*s  ", namelength, namelength, uname_field);
-		sbuf_cat(header, "THR PRI NICE  SIZE   RES ");
+		sbuf_cat(header, "THR PRI NICE   SIZE    RES ");
 		if (ps.swap) {
 			sbuf_printf(header, "%*s ", TOP_SWAP_LEN - 1, "SWAP");
 		}
@@ -1064,8 +1064,8 @@ format_next_process(struct handle * xhandle, char *(*get_userid)(int), int flags
 
 		sbuf_printf(procbuf, "%3d ", pp->ki_pri.pri_level - PZERO);
 		sbuf_printf(procbuf, "%4s", format_nice(pp));
-		sbuf_printf(procbuf, "%6s ", format_k(PROCSIZE(pp)));
-		sbuf_printf(procbuf, "%5s ", format_k(pagetok(pp->ki_rssize)));
+		sbuf_printf(procbuf, "%7s ", format_k(PROCSIZE(pp)));
+		sbuf_printf(procbuf, "%6s ", format_k(pagetok(pp->ki_rssize)));
 		if (ps.swap) {
 			sbuf_printf(procbuf, "%*s ",
 				TOP_SWAP_LEN - 1,

usr.bin/top/utils.c

@@ -297,7 +297,7 @@ format_k(int64_t amt)
 
     ret = retarray[index];
 	index = (index + 1) % NUM_STRINGS;
-	humanize_number(ret, 5, amt * 1024, "", HN_AUTOSCALE, HN_NOSPACE);
+	humanize_number(ret, 6, amt * 1024, "", HN_AUTOSCALE, HN_NOSPACE);
 	return (ret);
 }