MacPorts 2.4.0-beta1

• New action 'port reclaim' to clean inactive ports and unnecessary
  distfiles to get back disk space, developed during GSoC 2014.
  (ksammons in branch gsoc14-cleanup)
• New action 'port diagnose' to check for installation problems and
  configuration errors, developed during GSoC 2014.
  (ksammons in branch gsoc14-cleanup)
• Replaced the strings previously printed by "port help" with much more
  detailed and current manpages written using asciidoc that open
  automatically. Added documentation for almost all commands currently
  implemented by MacPorts.
  (raimue in branch new-help-system, merge in r123002,
  manpages written by cal, jmr, raimue, ionic, jeremyhu,
  #44530, #15467)
• Added interactive questions for various use cases like 'install',
  'activate', 'uninstall --follow-dependencies'. Also added global
  flag '-N' to provide non-interactive invocations.
  (shasha in branch gsoc14-interactive, merge in r124243)
• Display notes for installed or updated ports at the end of the
  installation to prevent them from getting lost in the scrolling output.
  (#24507, cal in r118304, patch by snc)
• Show date in verbose output of 'port installed'
  (raimue in r146757, r152685)
• Added "setunrequested" alias for "unsetrequested" command.
  (ionic in r130217)
• Handle SIGTERM and SIGINT (^C) in MacPorts to prevent inconsistencies in
  the registry database when MacPorts is aborted during a critical
  operation.
  (cal in r118297 and r118298)
• Added macports_version to the Portfile execution context, to allow
  checking the current MacPorts version in Portfiles.
  (cal in r134511)
• Add depends_test to handle the dependencies for the test phase of ports.
  (#38208, khindenburg in r140488)
• Remove "support" for rpm and deb packages in MacPorts, leaving pkg/mpkg.
  (afb in r123004)
• Remove deprecated rpm-vercomp function, ports should use vercmp instead.
  (afb in r123005)
• Use pkgbuild instead of PackageMaker.app in 'port pkg' on newer systems.
  (#42725, jmr in dd89bb8)