Log Message:
Update to 0.48

Upstream changes:
0.48 2013-09-01 15:42:51+0900

    - Fix tests for bleadperl

0.47

    - Support PUREPERL_ONLY build
      See the Lancaster Consensus:
      \ 
https://github.com/sjn/toolchain-site/blob/219db464af9b2f19b04fec05547ac10180a469f3/lancaster-consensus.md#specifying-pure-perl-builds

0.46

    - fixed unpacking issue on big-endian system.
    https://github.com/msgpack/msgpack-perl/issues/4

0.45

    - support tied hashes(rurban++)

0.44

    - do not display deprecated warnings from Data::MessagePack::Unpacker.
      T::Xslate using it...

0.43 2012-06-26T02:00:57

    - Data::MessagePack::Unpacker was deprecated.

0.42 2012-06-25 09:56:58

    - fix failing to pack IV/NV with MAGIC (e.g. $$ in 5.16.0)

0.41 2012-03-28 01:09:44

    - Revert the privous changed utf8() behavior

0.40 2012-03-28 00:37:28

    - Fix $messagepack->utf8(1) behavior
    - Fix tests on NV == long double env