move to 4.5.4

small changes to make threads work again.


git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1190 b08c6af1-5177-4d33-ba66-4b1c6b8b522a

C/dlmalloc.c

@@ -1,4 +1,7 @@
 #include "Yap.h"
+
+#if USE_DL_MALLOC
+
 #include "Heap.h"
 #if HAVE_STRING_H
 #include <string.h>
@@ -6,8 +9,6 @@
 #include "alloc.h"
 #include "dlmalloc.h"
 
-#if USE_DL_MALLOC
-
 /*
   This is a version (aka dlmalloc) of malloc/free/realloc written by
   Doug Lea and released to the public domain.  Use, modify, and