sysutils/mping: Update to 0.1.4 and add PKGNAMESUFFIX

+ Improved pkg-descr to differentiate from net/mping
+ Added PKGNAMESUFFIX to prevent conflict with net/mping

• Reported by antoine

+ Update to 0.1.4 which contains updated README.md

Reviewed by: mat (mentor)
Approved by: mat (mentor)
Sponsored by: Smule, Inc.
Differential Revision: https://reviews.freebsd.org/D16106