Rollup of 4 pull requests#1368

Closed

gnzlbg wants to merge 11 commits intorust-lang:masterfrom

gnzlbg:rollup-ytrx9bp

Commits on Feb 20, 2019

Fix android SA_* constants
malbarbo
committed

Commits on Mar 3, 2019

Set the type for S_ISUID, S_ISGID and S_ISVTX correctly
TethysSvensson
committed

Commits on May 23, 2019

Commits on May 24, 2019