* Only print "@ phase..." messages on demand since they're kind of   ugly and we already print phases (with start and end markers). * Remove some stray tabs.
* Only print "@ phase..." messages on demand since they're kind of
  ugly and we already print phases (with start and end markers).
* Remove some stray tabs.

svn path=/nixpkgs/branches/stdenv-updates/; revision=30059

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