- 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/exec.c

@@ -1037,7 +1037,7 @@ static Int exec_absmi(bool top, yap_reset_t reset_mode USES_REGS) {
       LOCAL_PrologMode = UserMode;
     } break;
     case 3: { /* saved state */
-      return FALSE;
+       return false;
     }
     default:
       /* do nothing */