1) download the new version from http://yaws.hyber.org/
2) extract somewhere else
3) copy ebin/, include/, src/, LICENSE, vsn.mk to <scalaris>/contrib/yaws
4) autoreconf -fi && ./configure --disable-pam && make in the extracted yaws dir (not <scalaris>/contrib/yaws)
5) copy src/mime_types.erl, src/yaws_appdeps.hrl, src/yaws_charset.hrl and
   src/yaws_generated.erl to <scalaris>/contrib/yaws/src
5a) fix absolute include path in mime_types.erl to "yaws.hrl"
5b) remove src/*.hrl.in
5c) reverse yaws-2e86da12b3.patch in <scalaris>/contrib/yaws:
    patch -Rp1 < ../yaws-2e86da12b3.patch
6) in <scalaris>/contrib/yaws:
    rm ebin/Makefile.*, include/Makefile.*, src/Makefile.*
    echo "/*.beam" > ebin/.gitignore
7) that's it, go back to <scalaris>/ and run make clean && ./configure && make
