moved smt tactic to smt folder

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>

scripts/mk_project.py

@@ -51,7 +51,7 @@ def init_project_def():
     add_lib('bv_tactics', ['tactic', 'bit_blaster'], 'tactic/bv')
     add_lib('fuzzing', ['ast'], 'test/fuzzing')
     add_lib('fpa', ['core_tactics', 'bv_tactics', 'sat_tactic'], 'tactic/fpa')
-    add_lib('smt_tactic', ['smt'], 'tactic/smt')
+    add_lib('smt_tactic', ['smt'], 'smt/tactic')
     add_lib('sls_tactic', ['tactic', 'normal_forms', 'core_tactics', 'bv_tactics'], 'tactic/sls')
     # TODO: split muz_qe into muz, qe. Perhaps, we should also consider breaking muz into muz and pdr.
     add_lib('muz_qe', ['smt', 'sat', 'smt2parser'])