Some update for vxWorks#1473

Merged

bors merged 4 commits intorust-lang:masterfrom

Wind-River:master

Aug 20, 2019

Commits on Aug 15, 2019

1. adding randBytes(), randABytes(), randUBytes(), randSecure() and taskDelay()
bpangWR
committed
Merge pull request #1 from Wind-River/bpang-issue1469
BaoshanPang
authored

Commits on Aug 16, 2019

remove spurious extra line
bpangWR
committed

Commits on Aug 18, 2019

Merge pull request #2 from Wind-River/bpang-issue1469
BaoshanPang
authored