K 10 svn:author V 3 imp K 8 svn:date V 27 2014-05-10T16:38:45.744822Z K 7 svn:log V 201 We haven't done anything with _UPGRADING in ~forever (was present, but not needed, in FreeBSD 6.x, and has been absent in newer versions). This was needed to upgrade from 3.x -> 4.x, once upon a time. END