I.e take advantage of the fact that a # comment is always terminated by a new line 
Add tests for the above


client/mysqltest.c:
  Improve "check_eol_junk" to detect junk although there are multi line comments in the way.
  I.e take advantage of the fact that a # comment is always terminated by a new line
mysql-test/r/mysqltest.result:
  Update resut file
mysql-test/t/mysqltest.test:
  Add test for improved check_eol_junk