Fix poly-torture to avoid order of eval issues

Normally, hhvm will translate

  echo "x $x";

as

  echo "x ".$x;

Which fully evaluates the rhs, then starts to output it.

hphp will transform it to

  echo "x ", $x;

Which avoids the concat, but outputs "x " before evaluating $x. hphp wont
perform the transformation if there are obvious side effects, but it will
treat a simple variable as having no side effects - even though it may
be uninitialized.

Im just fixing the test by performing the transformation manually. I don't
think anyone cares whether the $x undefined notice appears before or after
the "x ".

hphp/test/quick/poly-torture.php

@@ -38,7 +38,7 @@ class C {
     echo "C::__call $nm\n";
   }
   function noSuchMethodBoyeee($a, $b, $c, $d, $e) {
-    echo "C also has this method with params: $d $e\n";
+    echo "C also has this method with params: ", $d, " ", $e, "\n";
   }
 }
 
@@ -62,7 +62,7 @@ class MagicBox {
   }
   function __call($nm, $arr) {
     echo "--";
-    call_user_func_array(array($this->inner, $nm), $arr); 
+    call_user_func_array(array($this->inner, $nm), $arr);
   }
 }
 

hphp/test/quick/poly-torture.php.expectf

@@ -16,9 +16,9 @@ HipHop Warning: noSuchMethodBoyeee() expects exactly 5 parameters, 1 given in %s
 HipHop Warning: noSuchMethodBoyeee() expects exactly 5 parameters, 2 given in %s on line 41
 HipHop Warning: noSuchMethodBoyeee() expects exactly 5 parameters, 3 given in %s on line 41
 HipHop Warning: noSuchMethodBoyeee() expects exactly 5 parameters, 4 given in %s on line 41
-HipHop Notice: Undefined variable: d in %s on line 41
-HipHop Notice: Undefined variable: e in %s on line 41
-C also has this method with params:  
+C also has this method with params: HipHop Notice: Undefined variable: d in %s on line 41
+ HipHop Notice: Undefined variable: e in %s on line 41
+
 --C also has this method with params: 3 4
     randObj: A
     randObj: C