[svn r56] Initial support for TypeInfo.

Enums not work.
Several other bugfixes.

test/bug28.d

@@ -0,0 +1,17 @@
+module bug28;
+
+void main()
+{
+    char[] a = "hello";
+    char[] b = "hello";
+    char[] c = "world";
+    char[] d = "somethingelse";
+    assert(a == a);
+    assert(a == b);
+    assert(a != c);
+    assert(b != c);
+    assert(a != d);
+    assert(b != d);
+    assert(c != d);
+    assert(d == d);
+}