Add mmseg 3.2.14; This version is pacthed for compiling errors in MacOS....

Mirror of source code can be found at https://github.com/RobinQu/mmseg;

libmmseg is a Word Identification System for Mandarin Chinese Text Based on Two Variants of the Maximum Matching Algorithm
Can this test be modified to do something more substantial then e.g. `--version` or `--help`? See `cmake.rb` for an example of a formula with a good test. Thanks!