Doc fix.

libc/stdlib/malloc/calloc.c

@@ -1,5 +1,5 @@
 /*
- * libc/stdlib/malloc-zarg/calloc.c -- calloc function
+ * libc/stdlib/malloc/calloc.c -- calloc function
  *
  *  Copyright (C) 2002  NEC Corporation
  *  Copyright (C) 2002  Miles Bader <miles@gnu.org>

libc/stdlib/malloc/free.c

@@ -1,5 +1,5 @@
 /*
- * libc/stdlib/malloc-zarg/free.c -- free function
+ * libc/stdlib/malloc/free.c -- free function
  *
  *  Copyright (C) 2002  NEC Corporation
  *  Copyright (C) 2002  Miles Bader <miles@gnu.org>

libc/stdlib/malloc/malloc.c

@@ -1,5 +1,5 @@
 /*
- * libc/stdlib/malloc-zarg/malloc.c -- malloc function
+ * libc/stdlib/malloc/malloc.c -- malloc function
  *
  *  Copyright (C) 2002  NEC Corporation
  *  Copyright (C) 2002  Miles Bader <miles@gnu.org>

libc/stdlib/malloc/malloc.h

@@ -1,5 +1,5 @@
 /*
- * libc/stdlib/malloc-zarg/malloc.h -- small malloc implementation
+ * libc/stdlib/malloc/malloc.h -- small malloc implementation
  *
  *  Copyright (C) 2002  NEC Corporation
  *  Copyright (C) 2002  Miles Bader <miles@gnu.org>

libc/stdlib/malloc/realloc.c

@@ -1,5 +1,5 @@
 /*
- * libc/stdlib/malloc-zarg/realloc.c -- realloc function
+ * libc/stdlib/malloc/realloc.c -- realloc function
  *
  *  Copyright (C) 2002  NEC Corporation
  *  Copyright (C) 2002  Miles Bader <miles@gnu.org>