Partial cleanup of util/lp/*

src/util/lp/ul_pair.h

@@ -1,7 +1,22 @@
-/*
-  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
 #include "util/vector.h"
@@ -10,7 +25,7 @@
 #include <utility>
 #include "util/lp/column_info.h"
 
-namespace lean {
+namespace lp {
 
     enum lconstraint_kind {
         LE = -2, LT = -1 , GE = 2, GT = 1, EQ = 0