HEADS-UP: Enabling WITH_DEBUG_FILES by default

Hi,

Within the next 24 hours, I will merge the release-install-debug branch
into head, which will enable building and installing stripped debugging
files by default.

In general, this should have no significant impact, but any fallout will
be addressed as soon as possible after the merge.

Those that do not want debugging files built/installed by default should
add 'WITHOUT_DEBUG_FILES=1' to src.conf(5).  This will also be noted in
UPDATING.

This work was sponsored by The FreeBSD Foundation.

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Glen