Does not find jlink library on linux

[n6hpa]

Hi, first of all, thanks for creating this library! The issue is that the code is expecting jlinkarm.so.4 and on my system I have libjlinkarm.so.5. I was able to hack that to get it to work, but then it also was unable to find it so I added another hack to look in /opt/SEGGER/JLink. I'm in a hurry right now on another project otherwise I would try to fix it in a more generic way and submit a pull request.. maybe later.