archivers/smpq: [NEW PORT] StormLib MPQ (SMPQ) archiving utility

StormLib MPQ (SMPQ) archiving utility.
SMPQ is designed for full manipulating with Blizzard MPQ archives. SMPQ
can create archives, as well as extract, append, rename, and delete
files within MPQ archives. Support for encrypted, versioned, and
different types of archives is included. SMPQ is a free, open-source
command line utility written in C/C++, utilising the multiplatform C++
library, StormLib.

WWW: https://launchpad.net/smpq

Approved by: yuri@ (Mentor)
Differential Revision: https://reviews.freebsd.org/D44335