dev-perl/File-Slurper: Bump to 0.9.0

dev-perl/File-Slurper: Bump to 0.9.0

- EAPI6
- Ship benchmarks as USE="examples"
- Actually specify some dependencies and use a correctly
  normalised version. If @monsieurp is reading this he should
  imagine a nun ringing a bell beside him, and then look in this
  directory. SHAME!

Upstream:
- Ensure PerlIO::encoding is loaded before localising its
  $fallback value.

Keywording:
- New dependencies
- Dropped: alpha arm arm64 hppa ia64 m68k mips ppc ppc64 s390 sh
           sparc

Package-Manager: portage-2.3.3