[svn r58] Fixed cond expression resulting in a non-basic type.

Fixed identity expression for dynamic arrays.
Revamped the system to keep track of lvalues and rvalues and their relations.
Typedef declaration now generate the custom typeinfo.
Other bugfixes.

test/bug32.d

@@ -0,0 +1,14 @@
+module bug32;
+
+struct S
+{
+    char[] getName() { return name; }
+    char[] name;
+}
+
+void main()
+{
+    S s = S("Kyle");
+    char[] name = s.name;
+    printf("%.*s\n", name.length, name.ptr);
+}

test/bug33.d

@@ -0,0 +1,33 @@
+module bug33;
+
+extern(C) int memcmp(void*,void*,size_t);
+
+private int string_cmp(char[] s1, char[] s2)
+{
+    auto len = s1.length;
+    if (s2.length < len)
+        len = s2.length;
+    int result = memcmp(s1.ptr, s2.ptr, len);
+    if (result == 0)
+        result = cast(int)(cast(ptrdiff_t)s1.length - cast(ptrdiff_t)s2.length);
+    return result;
+}
+
+struct S
+{
+    char[] toString()
+    {
+        return "S";
+    }
+}
+
+int func()
+{
+    S a,b;
+    return string_cmp(a.toString(),b.toString());
+}
+
+void main()
+{
+    assert(func() == 0);
+}

test/condexp1.d

@@ -0,0 +1,12 @@
+module condexp1;
+
+void main()
+{
+    char[] a = "hello";
+    char[] b = "world";
+    int i = 42;
+    {
+    char[] c = i > 50 ? b : a;
+    assert(c is a);
+    }
+}

test/typeinfo3.d

@@ -0,0 +1,13 @@
+module typeinfo3;
+
+typedef int int_t;
+
+void main()
+{
+    int_t i;
+    auto ti = typeid(typeof(i));
+    printf("%s\n",ti.toString.ptr);
+    assert(ti.toString() == "typeinfo3.int_t");
+    assert(ti.next !is null);
+    assert(ti.next.toString() == "int");
+}