git: bsd-family-tree: add NetBSD 7.2

commit ec3ac3f3b2ad6aea3a6da3e4c514a480a5b6de07 Author: Eitan Adler Date: Thu Sep 6 01:44:21 2018 + bsd-family-tree: add NetBSD 7.2 Also correct the origin of NetBSD 8.0, which was not derived from 7.x. Obtained from: NetBSD Summary of changes: share/misc/bsd-

git: kernel: Fix some -Wint-in-bool-context warnings.

commit 9e2814118aabe1f24cf0048501b294f73e8c15e9 Author: Sascha Wildner Date: Thu Sep 6 02:57:10 2018 +0200 kernel: Fix some -Wint-in-bool-context warnings. I.e., stop treating integers like booleans. In ix(4) I commented out a problematic function that returns bool but tries

git: kernel - Avoid a race between dfly_schedulerclock and usched_dfly_cpu_init.

commit 3979974961a6ce6281d5b1425e99b0945281f39c Author: Imre Vadász Date: Tue Sep 4 22:47:17 2018 +0200 kernel - Avoid a race between dfly_schedulerclock and usched_dfly_cpu_init. * This race was repeatedly occuring during startup, running with multiple virtual cpu cores i