Added pragma(llvmdc, "string") for misc per-module compiler configuration, currently "string" can only be "verbose" which forces -vv for module it appears in.

Reimplemented support for nested functions/class using a new approach.
Added error on taking address of intrinsic.
Fixed problems with the ->syntaxCopy of TypeFunction delegate exp.
Removed DtoDType and replaced all uses with ->toBasetype() instead.
Removed unused inplace stuff.
Fixed a bunch of issues in the runtime unittests, not complete yet.
Added mini tests.

tests/mini/nested19.d

@@ -0,0 +1,27 @@
+module mini.nested19;
+
+void main()
+{
+    int i = 1;
+    
+    class C
+    {
+        int j = 2;
+        void func()
+        {
+            int k = 3;
+            
+            void foo()
+            {
+                i = i+j+k;
+            }
+            
+            foo();
+        }
+    }
+    
+    auto c = new C;
+    c.func();
+    
+    assert(i == 6);
+}