Merged revisions 304464 via svnmerge from

Merged revisions 304464 via svnmerge from
https://origsvn.digium.com/svn/asterisk/branches/1.4

........
  r304464 | qwell | 2011-01-27 10:57:46 -0600 (Thu, 27 Jan 2011) | 9 lines

  Fix default prefix=/usr regression on non-Linux systems.

  This partially reverts a change made in branches/1.4/ r267759, which will
  cause issue #17013 to be reopened.  This issue was pointed out by a user
  on #asterisk, who helpfully discovered that paths were being set incorrectly.

  To truly understand what was wrong, one should run:
      svn diff --force -c<this revision> configure
........

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.2@304465 65c4cc65-6c06-0410-ace0-fbb531ad65f3