Update Encode to CPAN version 2.48

  [DELTA]

  $Revision: 2.48 $ $Date: 2013/02/18 02:23:56 $
  ! encoding.pm
    t/Mod_EUCJP.pm t/enc_data.t t/enc_eucjp.t t/enc_module.t t/enc_utf8.t
    t/encoding.t t/jperl.t
    [PATCH] Deprecate encoding.pm
    https://rt.cpan.org/Ticket/Display.html?id=81255
  ! Encode/Supported.pod
    Fixed: Pod errors
    https://rt.cpan.org/Ticket/Display.html?id=81426
  ! Encode.pm t/Encode.t
    [PATCH] Fix for shared hash key scalars
    https://rt.cpan.org/Ticket/Display.html?id=80608
  ! Encode.pm
    Fixed: Uninitialized value warning from Encode->encodings()
    https://rt.cpan.org/Ticket/Display.html?id=80181
  ! Makefile.PL
    Install to 'site' instead of 'perl' when perl version is 5.11+
    https://rt.cpan.org/Ticket/Display.html?id=78917
  ! Encode/Makefile_PL.e2x
    find enc2xs.bat if it works on windows.
    https://github.com/dankogai/p5-encode/pull/7
  ! t/piconv.t
    Fix finding piconv in t/piconv.t
    https://github.com/dankogai/p5-encode/pull/6