introduce sat-smt-solver

in an iteration of inc-sat-solver introduce sat-smt-solver to allow incremental pre-processing.
The aim is to allow incrementally handling formulas while at the same time retaining the main benefits of global in/pre-processing that change models. Previous incremental solving capabilities have been limited to use pre-processing that does not require model conversion.

src/sat/sat_solver/sat_smt_solver.h

@@ -0,0 +1,25 @@
+/*++
+Copyright (c) 2014 Microsoft Corporation
+
+Module Name:
+
+    sat_smt_solver.h
+
+Abstract:
+
+    incremental solver based on SAT core.
+
+Author:
+
+    Nikolaj Bjorner (nbjorner) 2014-7-30
+
+Notes:
+
+--*/
+
+#pragma once
+
+#include "solver/solver.h"
+
+solver* mk_sat_smt_solver(ast_manager& m, params_ref const& p);
+