Partial cleanup of util/lp/*

src/util/lp/stacked_value.h

@@ -1,12 +1,27 @@
-/*
-  Copyright (c) 2017 Microsoft Corporation
-  Author: Lev Nachmanson
-*/
+/*++
+Copyright (c) 2017 Microsoft Corporation
+
+Module Name:
+
+    <name>
+
+Abstract:
+
+    <abstract>
+
+Author:
+
+    Lev Nachmanson (levnach)
+
+Revision History:
+
+
+--*/
 
 #pragma once
 // add to value the stack semantics
 #include <stack>
-namespace lean {
+namespace lp {
 template <typename T> class stacked_value {
     T m_value;    
     std::stack<T> m_stack;