"--rsyncpreferexcludes" was been replaced with anti-parameter "--rsyncpreferincludes"
output lists deduplication added
.gitignore modified
cleanup
"revision.h" deleting was been added to "clean" of "GNUmakefile"
README file updated
README file updated, manpage fixed
Merge https://github.com/xaionaro/clsync

merging with oldlaptop's man fixes