Added tests/jerry/unusual.js to test corner cases
Added tests/jerry-test-suite/11/11.08/11.08.06/11.08.06-008.js (a new test of instanceof)
Added new floatingpoint test case to tests/jerry/arithmetics-2.js
Added new test case to tests/jerry/arithmetics-bignums.js
JerryScript-DCO-1.0-Signed-off-by: Csaba Repasi repasics@inf.u-szeged.hu
