[svn r38] * resizing dynamic arrays support

* throw is replaced with assert(0)
* catch is ignored
* better foreach support
* various bugfixes

test/memory1.d

@@ -0,0 +1,10 @@
+module memory1;
+
+void main()
+{
+    auto a = new int[16];
+    {printf("array.length = %u\n", a.length);}
+    {a.length = a.length + 1;}
+    {printf("array.length = %u\n", a.length);}
+    {assert(a.length == 17);}
+}