Commit to add O_CLOEXEC support
Partly taken from FreeBSD.
DragonFly's VFS layer has diverged from other BSD implementations and I'd
like someone familiar with kernel file handling to have a look at this commit
before pushing it.
- File 0001-Add-O_CLOEXEC-flag-to-open-2-and-fhopen-2.patch added
- % Done changed from 0 to 50
New patch reusing the current O_ROOTCRED value.
O_ROOTCRED may be removed in the future, resolving the aliasing issue.