Log Message:
Update 1.73 to 1.77
-------------------
1.77  Apr 27, 2014
    - binmode doesn't work on IO::String and others tied objects (bug
      report by Mithun Ayachit)
    - fix spelling errors

1.76  Feb 13, 2014
    - add encoding feature

1.75  Jul 16, 2012
    - add support for order feature
    - silence warning on saveToString method (bug report by Mithun
      Ayachit)