Log Message:
Update to 2.04. From the changelog:

* CPAN #72458: Add 'all' export
  (thanks to Milan Kocian for providing a patch)
* CPAN #79821: Install to 'site' for perl 5.11+
  (thanks to Robert Sedlacek for providing a patch)
* CPAN #86736: Fix spelling of IPC_CREAT
* CPAN #78882: Document SIZE parameter of IPC::SharedMem->new()
* CPAN #78927: Fix spelling of 'nattch'