x86_64 is used as a baseline: the "x86_64" entry, whatever status it has,
is transformed into "all", and then the other entries in ARCHITECTURES
either dropped or rearranged appropriately.
* Drop LDFLAGS=-lnetwork and, instead, patch configure.ac.
* Remove -pthread from t/Makefile.am and fix BUILD_PREREQUIRES,
otherwise "make check" does not even build.
* Bump version.
* Refresh SUMMARY and DESCRIPTION.
* Add x86 and x86_64 to ARCHITECTURES.
* Shorten SOURCE_URI by making it start with $HOMEPAGE.
* Add missing libmaxminddb_devel in PROVIDES_devel.
* On x86_gcc2, install mmdblookup instead of mmdblookup-x86.
* Add call to fixPkgconfig in INSTALL() and move man3 to devel.
* Referring the current haiku version explicitly is not needed, since
the RequiresUpdater takes care of setting the version of Haiku used
for building a package.