Re: [libgfortran,patch] Remove never-used debugging code

[FX]

Turns out I missed some of the dead code. And I now also fixed comments and 
some formatting.
libgfortran/runtime/environ.c is now much more readable than before.
The patch is still a no-op, in terms of user functionality.
OK to commit to trunk?

FX

unusedcode.ChangeLog
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unusedcode.diff
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