[svn r57] Added most basic TypeInfo (rebuild lphobos).

Fixed some SymOffExp bugs.
Added another typeinfo test case.

test/typeinfo2.d

@@ -0,0 +1,14 @@
+module typeinfo2;
+
+void main()
+{
+    auto ti = typeid(float);
+    float f = 2.5;
+    hash_t fh = ti.getHash(&f);
+    assert(ti.next is null);
+    float g = 4.0;
+    ti.swap(&f,&g);
+    assert(f == 4.0 && g == 2.5);
+    assert(fh == *cast(uint*)(&g));
+    assert(!ti.flags);
+}