Mention HTTP::Daemon in the configure.ac output

Trivial enough fixup for fe1bce.
Fix libgdmaps check for /usr/share/GeoIP/GeoIP*dat

Assigning a variable doesn't glob and even if it did, it wouldn't expand
to "" on the non-matching case. Replace [ x"$GDMAPS_GEOIP_TEST_LOAD" !=
x ] checks with stat -t calls.
Merge pull request #29 from paravoid/misc-fixes-20130122

Fix make check & a trivial ./configure message fix