- add debugging code to memory allocation

= atom to number: cleanup function name as this is more than just supporting SWI
- SrcMask only applies to rules.
- add auxiliary type/error function
- fix typos
- fix enumeration mode in current_flag
- get rid of TrueName routines, use AbsoluteFileName instead.
- detail synatx error source

C/save.c

@@ -1400,7 +1400,7 @@ commit_to_saved_state(char *s, CELL *Astate, CELL *ATrail, CELL *AStack, CELL *A
   LOCAL_PrologMode = BootMode;
   if (Yap_HeapBase) {
     if (falseGlobalPrologFlag( HALT_AFTER_CONSULT_FLAG ) && !silentMode( )) {
-      Yap_TrueFileName(s,LOCAL_FileNameBuf2, YAP_FILENAME_MAX);
+      Yap_AbsoluteFileInBuffer(s,LOCAL_FileNameBuf2, YAP_FILENAME_MAX, true);
       fprintf(stderr, "%% Restoring file %s\n", LOCAL_FileNameBuf2);
     }
     Yap_CloseStreams(TRUE);
@@ -1442,7 +1442,7 @@ OpenRestore(char *inpf, char *YapLibDir, CELL *Astate, CELL *ATrail, CELL *AStac
   int mode;
   char fname[PATH_MAX+1];
   
-  if (!Yap_trueFileName( inpf, YAP_STARTUP, YapLibDir, fname, true, YAP_SAVED_STATE, true, true))
+  if (!Yap_AbsoluteFileInBuffer( inpf, fname, PATH_MAX, true))
     return false;
   if (fname[0] &&
       (mode = try_open(fname,Astate,ATrail,AStack,AHeap,streamp)) != FAIL_RESTORE) {