move smt params to params directory, update release.yml

src/params/theory_seq_params.h

@@ -0,0 +1,36 @@
+/*++
+Copyright (c) 2018 Microsoft Corporation
+
+Module Name:
+
+    theory_seq_params.h
+
+Abstract:
+
+    Parameters for sequence theory plugin
+
+Revision History:
+
+
+--*/
+
+#pragma once
+
+#include "util/params.h"
+
+struct theory_seq_params {
+    /*
+     * Enable splitting guided by length constraints
+     */
+    bool m_split_w_len = false;
+    bool m_seq_validate = false;
+    unsigned m_seq_max_unfolding = UINT_MAX/4;
+    unsigned m_seq_min_unfolding = 1;
+
+    theory_seq_params(params_ref const & p = params_ref()) {
+        updt_params(p);
+    }
+
+    void updt_params(params_ref const & p);
+};
+