[freepats] bad URLs for clarinet

[S. Christian Collins]

Greetings :)

The download link for the Clarinet samples is still pointing to the old, 
20170817 version, and therefore gives a "404 file not found" error when 
trying to download.

The URLs currently point to these two files:

http://freepats.zenvoid.org/Reed/Clarinet1/Clarinet-SFZ-20170817.tar.xz
http://freepats.zenvoid.org/Reed/Clarinet1/Clarinet-SF2-20170817.tar.xz

...but they should point to these files instead:

http://freepats.zenvoid.org/Reed/Clarinet1/Clarinet-SFZ-20190818.tar.xz
http://freepats.zenvoid.org/Reed/Clarinet1/Clarinet-SF2-20190818.tar.xz

Peace,

-~Chris