YENV may be an HW register (breaks some tabling code)

All YAAM instructions are now brackedted, so Op introduced an { and EndOp introduces an }. This is because Ricardo assumes that.
Fix attvars when COROUTING is undefined.


git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1516 b08c6af1-5177-4d33-ba66-4b1c6b8b522a

C/dlmalloc.c

@@ -2544,6 +2544,9 @@ struct mallinfo mALLINFo()
   mi.fsmblks = fastavail;
   mi.keepcost = chunksize(av->top);
   mi.usmblks = av->max_total_mem;
+  /* YAP doesn't have special mmapped regions */
+  mi.hblkhd = 0L;
+  mi.hblks = 0L;
   return mi;
 }