added missing Copyright forms

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

src/qe/nlarith_util.cpp

@@ -1,3 +1,9 @@
+
+/*++
+Copyright (c) 2015 Microsoft Corporation
+
+--*/
+
 #include "ast.h"
 #include "nlarith_util.h"
 #include "arith_decl_plugin.h"

src/qe/qe_arith.h

@@ -1,4 +1,10 @@
 
+/*++
+Copyright (c) 2015 Microsoft Corporation
+
+--*/
+
+
 #ifndef __QE_ARITH_H_
 #define __QE_ARITH_H_
 

src/qe/qe_array_plugin.cpp

@@ -1,4 +1,10 @@
 
+/*++
+Copyright (c) 2015 Microsoft Corporation
+
+--*/
+
+
 #include "qe.h"
 #include "array_decl_plugin.h"
 #include "expr_safe_replace.h"

src/qe/qe_cmd.cpp

@@ -1,3 +1,9 @@
+
+/*++
+Copyright (c) 2015 Microsoft Corporation
+
+--*/
+
 #include "qe_cmd.h"
 #include "qe.h"
 #include "cmd_context.h"

src/qe/qe_datatype_plugin.cpp

@@ -1,3 +1,9 @@
+
+/*++
+Copyright (c) 2015 Microsoft Corporation
+
+--*/
+
 // ---------------------
 // datatypes
 // Quantifier elimination routine for recursive data-types.

src/qe/qe_dl_plugin.cpp

@@ -1,4 +1,10 @@
 
+/*++
+Copyright (c) 2015 Microsoft Corporation
+
+--*/
+
+
 #include "qe.h"
 #include "expr_safe_replace.h"
 #include "dl_decl_plugin.h"

src/qe/qe_util.cpp

@@ -1,3 +1,9 @@
+
+/*++
+Copyright (c) 2015 Microsoft Corporation
+
+--*/
+
 #include "qe_util.h"
 #include "bool_rewriter.h"