Issue 117: Skip first line if it starts with a shebang when loading files.
Issue 117: Skip first line if it starts with a shebang when loading files.

A file that starts with #! is going to be a syntax error anyway, so we
won't be changing the behavior of any other valid source files with this
fix.

ccxvii/mujs,ccxvii/mujs,ccxvii/mujs,ccxvii/mujs