Fix problem reported by Nelgin:

In External programs after running Sycnrhonet BBS List you get
"Returning to <BBS> - hit a key". If you presss Q you get a blank external
menu menu rather than the full menu.
The main problem was the line counter, so clearing after returning from
executing an external program (unless the forced pause thing is on).

exec/xtrn_sec.js

@@ -45,6 +45,7 @@ function external_program_menu(xsec)
 
 	while(bbs.online) {
 
+		console.aborted = false;
 	    if(user.security.restrictions&UFLAG_X) {
 		    write(bbs.text(R_ExternalPrograms));
 		    break;
@@ -132,6 +133,8 @@ function external_program_menu(xsec)
 
 		if(prog_list[i].settings&XTRN_PAUSE)
 			console.pause();
+		else
+			console.line_counter=0;
 	}
 }
 
@@ -141,6 +144,7 @@ function external_section_menu()
 
     while(bbs.online) {
 
+		console.aborted = false;
 	    if(user.security.restrictions&UFLAG_X) {
 		    write(bbs.text(R_ExternalPrograms));
 		    break;