[dtaht/Cerowrt-3.3] 0784b5: opkg-gpg: remove inline signing requirement

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/dtaht/Cerowrt-3.3
  Commit: 0784b51b8b82a2fd760a5c08f91a5c28f43175ce
      https://github.com/dtaht/Cerowrt-3.3/commit/0784b51b8b82a2fd760a5c08f91a5c28f43175ce
  Author: Dave Taht <dave.taht at bufferbloat.net>
  Date:   2012-09-18 (Tue, 18 Sep 2012)

  Changed paths:
    M package/opkg/Makefile

  Log Message:
  -----------
  opkg-gpg: remove inline signing requirement

On a batch build it's too hard to sign packages. This change
(courtesy stephen walker) makes it possible to sign patches later.