20070727:
  AFFECTS: autotools
  AUTHOR:  ade@FreeBSD.org

Extensive reworking of the autotools ports has occurred, putting them in
the canonical locations, along with a suitable wrapper port to make
developing autotools-using code (as opposed to just building ports)
considerably easier.

Upgrade path is as follows for portupgrade, substitute the appropriate
commands if you are using portmaster:

   1.   portupgrade -f 'autoconf*' 'automake*'
   2.   cd /usr/ports/devel/autotools; make install
   3.   portupgrade -a

The second step is optional, but is recommended to bring in all versions
of autoconf and automake.

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この手順どおりやらなきゃいかんのか・・・？