Don't generate git patches that rename a file to multiple destinations With this patch, instead of generating N renames, we'll generate 1 rename and N-1 copies. Ideally the rename should come after the copies instead of before them, but that'd be harder to do.

abort: Failed to parse .../t/.hg/hgrc
File contains no section headers.
file: .../t/.hg/hgrc, line: 1
'invalid\n'