Update OpenAL from 1.17 to 1.21 use v141_xp cause it needs C++14
Changelog: https://github.com/kcat/openal-soft/blob/master/ChangeLog
Refs: #3004
@Stan did you update it to 1.21 or 1.21.1 bugfix release?
1.2.1 There is no 1.2.1.1 yet https://github.com/kcat/openal-soft/releases