Move fatal from lexer.c to parser.c, rename it to parser_fatal, replace calls from main.c to parser_fatal with calls to jerry_Exit.

src/libjsparser/lexer.h

@@ -161,6 +161,4 @@ void lexer_save_token (token);
 
 void lexer_dump_buffer_state (void);
 
-void fatal(int);
-
 #endif