FreeBSD_HEAD - Build #3273 - Fixed

[jenkins-admin at FreeBSD.org]

FreeBSD_HEAD - Build #3273 - Fixed:

Build information: https://jenkins.FreeBSD.org/job/FreeBSD_HEAD/3273/
Full change log: https://jenkins.FreeBSD.org/job/FreeBSD_HEAD/3273/changes
Full build log: https://jenkins.FreeBSD.org/job/FreeBSD_HEAD/3273/console

Change summaries:

288076 by bdrewery:
Fix installation of 32bit libraries after r288074.

FILES is not used when LIBRARIES_ONLY is set, which is used to build and
install the lib32 sysroot.  All of the csu files do quality as "libraries"
for this case so just undefine LIBRARIES_ONLY.

This is still better than the previous realinstall handling as it does
not hook into META_MODE properly.

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