[tests] new test directory 'bts'

src/plugins/e-acsl/tests/bts/oracle/bts1717.1.err.oracle

src/plugins/e-acsl/tests/bts/oracle/bts1717.1.res.oracle

src/plugins/e-acsl/tests/bts/oracle/gen_bts1304.c

src/plugins/e-acsl/tests/bts/oracle/gen_bts13042.c

src/plugins/e-acsl/tests/bts/oracle/gen_bts1307.c

src/plugins/e-acsl/tests/bts/oracle/gen_bts13072.c

src/plugins/e-acsl/tests/bts/oracle/gen_bts1324.c

src/plugins/e-acsl/tests/bts/oracle/gen_bts13242.c

src/plugins/e-acsl/tests/bts/oracle/gen_bts1326.c

src/plugins/e-acsl/tests/bts/oracle/gen_bts13262.c

src/plugins/e-acsl/tests/bts/oracle/gen_bts1390.c

src/plugins/e-acsl/tests/bts/oracle/gen_bts13902.c

src/plugins/e-acsl/tests/bts/oracle/gen_bts1398.c

src/plugins/e-acsl/tests/bts/oracle/gen_bts13982.c

src/plugins/e-acsl/tests/bts/oracle/gen_bts1399.c

src/plugins/e-acsl/tests/bts/oracle/gen_bts13992.c

src/plugins/e-acsl/tests/bts/oracle/gen_bts1478.c

src/plugins/e-acsl/tests/bts/oracle/gen_bts14782.c

src/plugins/e-acsl/tests/bts/oracle/gen_bts1700.c

src/plugins/e-acsl/tests/bts/oracle/gen_bts1717.c