Update copyright notices with scripts/update-copyrights
Update remaining copyright dates

Update copyright years that are not handled by scripts/update-copyright.
scripts/update-copyrights: adjust configure input file suffix
Regenerate x86 / x86_64 ulps.
Regenerate MIPS ulps.
Regenerate ARM ulps.
[AArch64] Pointer mangling support for AArch64.
[AArch64] Define ABORT_INSTRUCTION.
[AArch64] Regenerate libm-test-ulps.
Fix infinite loop in nscd when netgroup is empty (bz #16365)

Currently, when a user looks up a netgroup that does not have any
members, nscd goes into an infinite loop trying to find members in the
group.  This is because it does not handle cases when getnetgrent
returns an NSS_STATUS_NOTFOUND (which is what it does on empty group).
Fixed to handle this in the same way as NSS_STATUS_RETURN, similar to
what getgrent does by itself.
Fix return code from getent netgroup when the netgroup is not found (bz #16366)

nscd incorrectly returns a success even when the netgroup in question
is not found and adds a positive result in the cache.  this patch
fixes this behaviour by adding a negative lookup entry to cache and
returning an error when the netgroup is not found.