Updating devel/p5-local-lib from 1.4.6 to 1.4.7

Upstream changes:
1.004007 2009-09-02
        - Ensure that $ENV{PERL5LIB} and @INC are always de-duped, stopping
          them from growing if local::lib is invoked multiple times for the
          same path. (t0m)

        - Doc improvements by kurisuto@irc.perl.org/#catalyst.

        - Cleaned up indentation of code lines in the POD. Everything should be
          nice and flush, now.

(sno)