This is a script for reviewing refactorying patches.  It the goal is
to remove all the non-code changes and leave the interesting bits.

It has options to modify all the new lines or all the lines in the
diff.  For example, if someone sends a patch to make functions static
then you can do:
	cat patch.txt | rename_rev.pl -ea 's/static //'
and hopefully it looks like the patch doesn't do anything.

This version fixes a bug where if you reordered a line of code but
don't make any other changes, it was ignored.  Obviously that should
show up as an interesting change.

regards,
dan carpenter