Update devel/mtbl port to version 1.3.0
The immutable sorted string table library project, mtbl 1.3.0, was released. This release includes improvements enabling aggregation. In detail: * Fix mtbl_reload_now() on filesets with open iterators. * Add support for absolute pathnames in filesets * Make merge function an optional parameter for mergers and filesets to enable unmerged results. * Add dupsort function to sort unmerged results based on data. * Add filename filter option to filesets. This provides functionality similar to mtbl_fileset_partition() but resilient against fileset reloads. * Add mtbl_fileset_dup() to open an existing fileset with different options.
Sort Makefile to pacify portlint.
Sponsored by: Farsight Security, Inc.