Fix:	SE046

Problem:
	eraseoldlocks() does not support file areas.

Reported by:
	Peter Makholm, peter@makholm.net

Compatible with:
	Slash'EM 0.0.5E7F1
	Slash'EM 0.0.6E0F1

Author: J. Ali Harlow, ali@avrc.city.ac.uk

Date:	26 Jan 2000

*** sys/unix/unixunix.c.orig	Mon Jan 17 13:29:59 2000
--- sys/unix/unixunix.c	Wed Jan 26 13:55:52 2000
***************
*** 157,166 ****
  	for(i = 1; i <= MAXDUNGEON*MAXLEVEL + 1; i++) {
  		/* try to remove all */
  		set_levelfile_name(lock, i);
  		(void) unlink(lock);
  	}
  	set_levelfile_name(lock, 0);
! 	if(unlink(lock)) return(0);			/* cannot remove it */
  	return(1);					/* success! */
  }
  
--- 157,175 ----
  	for(i = 1; i <= MAXDUNGEON*MAXLEVEL + 1; i++) {
  		/* try to remove all */
  		set_levelfile_name(lock, i);
+ #ifdef FILE_AREAS
+ 		(void) remove_area(FILE_AREA_LEVL, lock);
+ #else
  		(void) unlink(lock);
+ #endif
  	}
  	set_levelfile_name(lock, 0);
! #ifdef FILE_AREAS
! 	if(remove_area(FILE_AREA_LEVL, lock))
! #else
! 	if(unlink(lock))
! #endif
! 		return(0);			/* cannot remove it */
  	return(1);					/* success! */
  }