i've commited major changes of pkg tools discussed on tech-pkg
and changed how to find binary pakages.

before:
- current directory was searched first even if you set PKG_PATH.
- local directories in PKG_PATH was prefered over remote(ftp) ones.

after:
- current directory isn't searched automatically if PKG_PATH is set.
- local directories isn't prefered anymore.
  (ie. simply searched in the order specified by PKG_PATH
  regardless of which it's local or remote.)

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YAMAMOTO Takashi <yamt@mwd.biglobe.ne.jp>