Copy stable/11@r303970 to releng/11.0 as part of the 11.0-RELEASE
cycle.

Prune svn:mergeinfo from the new branch, and rename it to RC1.

Update __FreeBSD_version.

Use the quarterly branch for the default FreeBSD.conf pkg(8) repo and
the dvd1.iso packages population.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Oops, the weak reference for ceill(), floorl() and truncl() was in the
wrong file. This broke arm and powerpc.

Reported by: grehan

s_ceill.c
s_floorl.c
s_truncl.c

On arches where long double is the same as double, alias ceil(), floor()
and trunc() to the corresponding long double functions. This is not
just an optimization for these arches. The full long double functions
have a wrong value for `huge', and the arches without full long doubles
depended on it being wrong.

Revert the last change, the conversion from long double to double can raise
unwanted underflow exceptions.

Pointed out by: das

Use double additions to raise the inexact exception to work around problems
with long double addition on sparc64.

Fix raising the inexact exception (FE_INEXACT) if the result differs from the
argument.

Noticed by: das

Implement floorl().