EoL for Ports and Ports Infrastructure on RELENG_4

“Diff for /ports/UPDATING between version 1.474 and 1.475"．

20070205:
  AFFECTS: all users of FreeBSD 4.X
  AUTHOR: portmgr@FreeBSD.org

  The remnants of FreeBSD 4.X support have been removed from bsd.port.mk.
  Any remaining users should _not_ get this or any subsequent updates.

20070205は20070305の間違いだと思うけど，FreeBSD 4.Xとはさようなら…