make-man-pages: drop tempfile indirections
make-man-pages: drop tempfile indirections

Both pandoc and lowdown now support passing document metadata in
command-line arguments with -M, so do that instead of writing a temp
file on disk. Even pandoc 1.12.2.1 from e.g. Ubuntu 14.04 seems to be
supporting this, so it should be safe enough.

maxmind/libmaxminddb,maxmind/libmaxminddb,maxmind/libmaxminddb