naruse	2008-02-23 20:18:07 +0900 (Sat, 23 Feb 2008)

  New Revision: 15583

  Modified files:
    trunk/ChangeLog
    trunk/string.c

  Log:
    * string.c (str_sublen): removed.
    
    * string.c (rb_str_reverse, rb_str_reverse_bang): use 
      single_byte_optimizable.

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/string.c?r1=15583&r2=15582&diff_format=u
  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/ChangeLog?r1=15583&r2=15582&diff_format=u