bump(app-emulation/xen): sync with upstream

Packages updated:
  app-emulation/xen
  app-emulation/xen-pvgrub
  app-emulation/xen-tools
bump(app-emulation/qemu): sync with upstream
Merge pull request #151 from marineam/xen

Xen and QEMU updates
bump(eclass): sync with upstream

Packages updated:
  eclass
  licenses
  profiles
prune: remove ebuilds that trigger warnings in the new eclasses

Some eclasses have dropped support for older EAPIs, some effected
ebuilds aren't actually needed so just remove them instead of updating.
bump(dev-perl/*): sync with upstream

Packages updated:
  dev-perl/Crypt-PasswdMD5
  dev-perl/Digest-SHA1
  dev-perl/File-Slurp
  dev-perl/Locale-gettext
  dev-perl/URI
  dev-perl/XML-Parser
  perl-core/Digest
  virtual/perl-Digest
bump(dev-vcs/git): sync with upstream
bump(dev-python/pyxattr): sync with upstream
bump(dev-python/lxml): sync with upstream
Merge pull request #152 from marineam/updates

Update eclasses and profiles
pulling in latest upstream changes.