Updates for VxWorks#67977

Merged

bors merged 2 commits intorust-lang:masterfrom

Wind-River:master_2020

Jan 8, 2020

Commits on Jan 6, 2020

Remove weak.rs for VxWorks

Umesh Kalappa
authored and
BaoshanPang
committed

Commits on Jan 7, 2020

ignore signal SIGPIPE
BaoshanPang
committed