ChangeLogs included in dist

[Ben Elliston]

Automake will currently include a file called "ChangeLog" in the
distribution.  Many large projects use a scheme of appending a number
to ChangeLogs when the files are rotated.  For example, GCC uses:

  ChangeLog
  ChangeLog.0
  ...
  ChangeLog.10

Can I suggest that the list of matched files be expanded to include
ChangeLog.[0-9]+?

Cheers, Ben