pusharg takes multiple args at same time

tests/functions.grnd

@@ -38,4 +38,12 @@ stdlnout $tmp
 add 1 $counter &counter
 jump %loopstart
 @loopend
-end 0
+
+fun -int !doSomething -int &a -string &b
+    println $a
+    println $b
+    return 0
+endfun
+
+pusharg 432 "dingle"
+!doSomething &ret