Cleanup of mjsunit.js code and make assertEquals more strict.

test/mjsunit/regexp-compile.js

Index: test/mjsunit/regexp-compile.js
diff --git a/test/mjsunit/regexp-compile.js b/test/mjsunit/regexp-compile.js
index 6f8e75196d456afdd3782fd21598c93539d1bd0f..6a24325e16dfbb3a96501b5c7c864aa91801a436 100644
--- a/test/mjsunit/regexp-compile.js
+++ b/test/mjsunit/regexp-compile.js
@@ -27,16 +27,16 @@
 
 // Test that we don't cache the result of a regexp match across a
 // compile event.
-var re = /x/; 
+var re = /x/;
 assertEquals("a.yb", "axyb".replace(re, "."));
 
-re.compile("y")
+re.compile("y");
 assertEquals("ax.b", "axyb".replace(re, "."));
 
 re.compile("(x)");
 
-assertEquals("x,x", re.exec("axyb"));
+assertEquals(["x", "x"], re.exec("axyb"));
 
 re.compile("(y)");
 
-assertEquals("y,y", re.exec("axyb"));
+assertEquals(["y", "y"], re.exec("axyb"));