dirty changes to Nim's memory tracker; requires cleanups

lib/system/memtracker.nim

@@ -62,12 +62,17 @@ proc addEntry(entry: LogEntry) =
         interesting = true
         break
     if interesting:
-      cprintf("interesting %s:%ld\n", entry.file, entry.line)
+      gLog.disabled = true
+      cprintf("interesting %s:%ld %s\n", entry.file, entry.line, entry.op)
+      let x = cast[proc() {.nimcall, tags: [], gcsafe, locks: 0.}](writeStackTrace)
+      x()
+      quit 1
       if gLog.count > high(gLog.data):
         gLogger(gLog)
         gLog.count = 0
       gLog.data[gLog.count] = entry
       inc gLog.count
+      gLog.disabled = false
 
 proc memTrackerWrite(address: pointer; size: int; file: cstring; line: int) {.compilerProc.} =
   addEntry LogEntry(op: "write", address: address,