The ecma_date_make_day() handled any date in October on leap years incorrectly,
which was mentioned in issue #1836. The ecma_date_week_day() returned minus values
when return week_day before 1970 years which was also incorrect.
This change solves these bugs. In addition, this enhances the algorithm of accessing 'the ym-mn-1'
by replacing binary search to simple computation at ecma_date_make_day().
JerryScript-DCO-1.0-Signed-off-by: Hayun Lee lhy920806@gmail.com
LeeHayun