Bug fixed:

- no display on serial terminal in top mode.
- display alignment for continuation string.
- correct invalid value used for display limit.

MFC after:	3 days

usr.sbin/pmcstat/pmcpl_callgraph.c

@@ -550,7 +550,7 @@ pmcstat_cgnode_topprint(struct pmcstat_cgnode *cg,
 
 		len = ns_len + vs_len + 1;
 		if (width - len < 0) {
-			PMCSTAT_PRINTW("...");
+			PMCSTAT_PRINTW(" ...");
 			break;
 		}
 		width -= len;

usr.sbin/pmcstat/pmcpl_calltree.c

@@ -387,7 +387,7 @@ pmcpl_ct_node_dumptop(int pmcin, struct pmcpl_ct_node *ct,
 	if (ct->pct_narc == 0) {
 		pmcpl_ct_topscreen[x+1][*y] = NULL;
 		if (*y >= PMCPL_CT_MAXLINE ||
-		    *y >= pmcstat_displaywidth)
+		    *y >= pmcstat_displayheight)
 			return 1;
 		*y = *y + 1;
 		for (i=0; i < x; i++)

usr.sbin/pmcstat/pmcstat.c

@@ -1311,6 +1311,9 @@ main(int argc, char **argv)
 			intrflush(stdscr, FALSE);
 			keypad(stdscr, TRUE);
 			clear();
+			/* Get terminal width / height with ncurses. */
+			getmaxyx(stdscr, pmcstat_displayheight, pmcstat_displaywidth);
+			pmcstat_displayheight--; pmcstat_displaywidth--;
 			atexit(pmcstat_topexit);
 		}
 	}