compiler/vm: Use stdout too in VM time echo

Now VM time echo outputs to stdout too, same as compile time echo, rather using
same handle as compiler diagnostics (stderr default).

compiler/msgs.nim

@@ -751,6 +751,15 @@ proc msgWriteln*(s: string) =
       when defined(windows):
         flushFile(stderr)
 
+proc stdoutWriteln*(s: string) =
+  ## Writes to stdout.
+  ## Should be used only for VM time equivalents to procs outputting to stdout.
+  if not isNil(writelnHook):
+    writelnHook(s)
+  else:
+    writeLine(stdout, s)
+    flushFile(stdout)
+
 macro callIgnoringStyle(theProc: typed, first: typed,
                         args: varargs[expr]): stmt =
   let typForegroundColor = bindSym"ForegroundColor".getType

compiler/vm.nim

@@ -811,13 +811,13 @@ proc rawExecute(c: PCtx, start: int, tos: PStackFrame): TFullReg =
     of opcEcho:
       let rb = instr.regB
       if rb == 1:
-        msgWriteln(regs[ra].node.strVal)
+        stdoutWriteln(regs[ra].node.strVal)
       else:
         var outp = ""
         for i in ra..ra+rb-1:
           #if regs[i].kind != rkNode: debug regs[i]
           outp.add(regs[i].node.strVal)
-        msgWriteln(outp)
+        stdoutWriteln(outp)
     of opcContainsSet:
       decodeBC(rkInt)
       regs[ra].intVal = ord(inSet(regs[rb].node, regs[rc].regToNode))