Log Message:
Update to 2.1603
Update DEPENDS

Upstream changes:
2.1603   2015-08-28

  - No changes from 2.1602-TRIAL (other than a minor documentation tweak).

2.1602   2015-08-14 (TRIAL RELEASE)

  [BUG FIXES]

  - Replaced uses of overload::Overloaded with the new
    Devel::OverloadInfo::is_overloaded (thanks, ilmari!) to work around more
    issues with overload handling in older versions of perl.

2.1601   2015-08-10 (TRIAL RELEASE)

  [BUG FIXES]

  - Explicit boolean overload handling has been added to Class::MOP::Method
    and Moose::Meta::Role::Method::Required, to work around a bug with the
    handling of overload fallbacks on perl 5.8.x.  In particular this fixes
    issues observed in MooseX::MethodAttributes.