Unison full changelog

* Added quot;BelowPathquot; patterns, that match a path as well as all paths below (convenient to use with nodeletion,update,creationpartial preferences)
* Added a quot;fatquot; preference that makes Unison use the right options when one of the replica is on a FAT filesystem.
* Allow quot;prefer/force=newerquot; even when not synchronizing modification times. (The reconciler will not be aware of the modification time of unchanged files, so the synchronization choices of Unison can be different from when quot;times=truequot;, but the behavior remains sane: changed files with the most recent modification time will be propagated.)
* Minor fixes and improvements:
o Compare filenames up to decomposition in case sensitive mode when one host is running MacOSX and the unicode preference is set to true.
o Rsync: somewhat faster compressor
o Make Unicode the default on all architectures (it was only the default when a Mac OS X or Windows machine was involved).