MFC of r227310:

MFC of r227310:

Don astbestos garment and remove the warning about TMPFS being experimental
-- highly experimental even. So far the closest to a bug in TMPFS that people
have gotten to relates to how ZFS can take away from the memory that TMPFS
needs. One can argue that such is not a bug in TMPFS. Irrespective, even if
there is a bug here and there in TMPFS, it's not in our own advantage to
scare people away from using TMPFS. I for one have been using it, even with
ZFS, very successfully.

Reviewed by:	marcel

git-svn-id: svn://svn.freebsd.org/base/stable/8@234512 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f