Revision 1881728

Merge r1879822, r1879831, r1879840 from trunk:

Add a new way to document changes

* Makefile.in: Define the update-changes target to merge the change files
  from the changes directory to the top of the CHANGES file and remove
  them afterwards. If a Subversion binary was found during configure try
  to svn rm them otherwise just delete them.

* configure.in: Search for the Subversion binary.

* acinclude.m4: Set the corresponding Makefile variable for the Subversion
  binary.

* README.CHANGES: New file to document the new approach.


Can we have mercy with people working on case-preserving file systems?


Consider case insensitive filessystems

Consider case insensitive filessystems and thus choose a new non conflicting
name for the directory to store CHANGES entries.

Reviewed by: rpluem, jim, jorton