Add utf-8 processing routines.
Change ecma_char_t from char/uint16_t to uint16_t.
Apply all utf-8 processing routines.
Change char to jerry_api_char in API functions' declarations.
JerryScript-DCO-1.0-Signed-off-by: Andrey Shitov a.shitov@samsung.com
Updating jerry_api_eval to use ecma_op_eval_chars_buffer, so removing redundant conversion of character array to ecma-string.
JerryScript-DCO-1.0-Signed-off-by: Ruben Ayrapetyan r.ayrapetyan@samsung.com