Log Message:
lang/konoha: Add DragonFly support, kill MySQL detection

* Specific DragonFly configuration was added
* A couple of K_USING_BSD macros were changed to __NetBSD__ along with
  other changes to support FreeBSD and DragonFly
* If MySQL is on the system, CMake will find it and try to use it.
  Problem 1: It's broken, it can't link to libmysql
  Problem 2: If it could, it would affect PLIST

So disable MySQL detection for now, sqlite3 is what's used.
I suspect there are other CMake detection logic that aren't accounted
for yet in Konoha.