[musl] Remove sys/resource.h and ulimit.h These are legacy POSIX resource measurement and scheduler control interfaces and don't map well to our plans for Fuchsia. Change-Id: I7341465d240906a7dafa3effd47740348459ef04
[musl] Use #pragma once in musl's public headers Like the prior commit, this only replaces existing ifdef guards. Change-Id: I39be129111db9f129aef72a53f986ce6a49376ac
[magenta] Initial commit