Don't check for __linux__ specifically, check for PR_SET_NAME feature instead
Don't check for __linux__ specifically, check for PR_SET_NAME feature instead

Signed-off-by: Giel van Schijndel <b1c1d8736f20db3fb6c1c66bb1455ed43909f0d8@mortis.eu>

wastholm/bitcoin,wastholm/bitcoin,wastholm/bitcoin,wastholm/bitcoin,wastholm/bitcoin,wastholm/bitcoin