General pre-release cleanup commit

* Rename {model,util_model}.{h,cpp} files to match class names
* Fix alreadyVisited() issue in TheoryEngine
* Remove spurious Message that causes compliance issues
* Update copyrights, fix public/private markings in headers
* minor comment fixes
* remove EXTRACT_OP as a special-case in typechecker
* note about rewriters in theoryskel readme
* Clean up some compiler warnings
* Code typos and spacing

1 files changed, 17 insertions, 0 deletions

diff --git a/src/theory/atom_requests.cpp b/src/theory/atom_requests.cpp
index 3d111f9f8..6070004d2 100644
--- a/src/theory/atom_requests.cpp
+++ b/src/theory/atom_requests.cpp
@@ -1,3 +1,20 @@
+/*********************                                                        */
+/*! \file atom_requests.cpp
+ ** \verbatim
+ ** Original author: Dejan Jovanovic
+ ** Major contributors: none
+ ** Minor contributors (to current version): none
+ ** This file is part of the CVC4 project.
+ ** Copyright (c) 2009-2013  New York University and The University of Iowa
+ ** See the file COPYING in the top-level source directory for licensing
+ ** information.\endverbatim
+ **
+ ** \brief [[ Add one-line brief description here ]]
+ **
+ ** [[ Add lengthier description here ]]
+ ** \todo document this file
+ **/
+
 #include "theory/atom_requests.h"
 
 using namespace CVC4;