K 10
svn:author
V 11
arichardson
K 8
svn:date
V 27
2019-07-02T22:11:07.210702Z
K 7
svn:log
V 201
Fix build race when building rtld

I found this on one of the CheriBSD Jenkins builders. Using
beforelinking instead of ${PROG} should fix the dependency for the
DEBUG_FILES case.

Reviewed by:	brooks

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