RFU: doxygen 1.6.1-2

[Warren Young]

This fixes some packaging errors in -1 and adds manpages to the package.

wget -e robots=off --cut-dirs=2 -np -nH -A'*1.6.1-2*' -r \
    http://etr-usa.com/cygwin/doxygen/

Previous -1 should be removed.