Two fixes:

GMP should not do error handling itself, as its execution env is
not reliable.
	allocate should check for space.


git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@875 b08c6af1-5177-4d33-ba66-4b1c6b8b522a

C/tracer.c

@@ -113,10 +113,6 @@ low_level_trace(yap_low_level_port port, PredEntry *pred, CELL *args)
   /*  extern int gc_calls; */
 
   vsc_count++;
-  if (vsc_count < 1077000) {
-    return;
-  }
-  if (vsc_count == 1077205LL) vsc_xstop = 1;
 #ifdef COMMENTED
   if (vsc_count < 123536430LL) {
     if (vsc_count == 123536441LL) vsc_xstop = 1;