Updated p5-DateTime to 1.3800.

1.38  2016-09-16

- This release includes changes from past trial releases to switch from
  Params::Validate and Params::ValidationCompiler. Relevant release notes from
  those trial releases are repeated here for clarity.

- Replaced Params::Validate with Params::ValidationCompiler and Specio. In my
  benchmarks this makes constructing a new DateTime object about 14%
  faster. However, it slows down module load time by about 100 milliseconds
  (1/10 of a second) on my desktop system with a primed cache (so really
  measuring compile time, not disk load time).

- When you pass a locale to $dt->set you will now get a warning suggesting you
  should use $dt->set_locale instead. The previous trial releases didn't allow
  locale to be passed at all, which broke a lot of modules. I've sent PRs, but
  for now the parameter should be allowed (but discouraged). Reported by
  Slaven Rezić. RT #115420.

1.37  2016-08-14 (TRIAL RELEASE)

- Require the latest Params::ValidationCompiler (0.11).

(wiz)