Don't echo '# $FreeBSD$' as the first line into the .uu file.  Keyword
substitution applies to this file, including the echo command. Avoid
the match (and substitution) by breaking the string up into 3 parts.


git-svn-id: svn+ssh://svn.freebsd.org/base/head@271968 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f