adding dt-solver (#4739)

* adding dt-solver

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

* dt

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

* move mbp to self-contained module

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

* files

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

* Create CMakeLists.txt

* dt

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

* rename to bool_var2expr to indicate type class

* mbp

* na

src/qe/CMakeLists.txt

@@ -2,30 +2,25 @@ z3_add_component(qe
   SOURCES
     nlarith_util.cpp
     nlqsat.cpp
-    qe_arith.cpp
     qe_arith_plugin.cpp
     qe_array_plugin.cpp
-    qe_arrays.cpp
     qe_bool_plugin.cpp
     qe_bv_plugin.cpp
     qe_cmd.cpp
     qe.cpp
     qe_datatype_plugin.cpp
-    qe_datatypes.cpp
     qe_dl_plugin.cpp
     qe_lite.cpp
-    qe_mbp.cpp
     qe_mbi.cpp
-    qe_solve_plugin.cpp
+    qe_mbp.cpp
     qe_tactic.cpp
-    qe_term_graph.cpp
     qsat.cpp
   COMPONENT_DEPENDENCIES
     nlsat_tactic
     nlsat
-    sat
     smt
     tactic
+    mbp
   TACTIC_HEADERS
     nlqsat.h
     qe_lite.h