no bug, mark two slow tests as slow

js/src/jit-test/tests/basic/bug674776.js

@@ -1,4 +1,4 @@
-// |jit-test| debug
+// |jit-test| slow; debug
 
 /* Make a lot of functions of the form:
 function x1(){x1();}

js/src/jit-test/tests/basic/testCompileScript.js

@@ -1,4 +1,4 @@
-// |jit-test| mjitalways
+// |jit-test| slow; mjitalways
 
 var nlocals = 50;
 var localstr = "";