Update ExtUtils-MakeMaker to CPAN version 6.66

  [DELTA]

  6.66 Fri Apr 19 17:53:13 BST 2013
    No changes from 6.65_03

  6.65_03 Mon Apr 15 13:44:24 BST 2013
    Test Fixes
    * Use File::Temp in parse_* tests to resolve race conditions
      on 64bit Windows
      (bingos)

  6.65_02 Sun Apr 14 10:56:41 BST 2013
    Test Fixes
    * t/xs.t is now running tests against the XS build.
      (Michael G Schwern) (Leon Timmermans)

  6.65_01 Tue Mar 19 00:06:17 CET 2013
    New Features
    * Improvements perlcritic support. (M. Schwern)
    * Improvements to dynamic linking for gcc (Tobias Leich)
      [github #43]
    * Change $(PERL_HDRS) from a hard coded list of headers to
      reading install directory for available header files. Allows
      us to work with any version of Perl properly.
      (Yves Orton, Craig A. Berry) [github #47]

    Doc Fixes
    * Numerous typo fixes. (Ben Bullock)
      [github #33] [github #34] [github #35]
    * Various FAQ and doc improvements (M. Schwern, Ivan Bessarabov)
      [github #44]

    Bug Fixes
    * fixes relating to hash ordering (Yves Orton)
      [github #46] [rt.cpan.org #83441] [rt.perl.org #116857]
    * fixes to Mksymlists (Ben Bullock, Yves Orton)
      [github #48] [github #49] [github #51]