Fix a comment about the /<target> appended to config.layout variables

postpended with a '+' character. We don't currently support --target
(and as Thom pointed out, --target means something completely different
to Autoconf). Also change the default for '+' replacement to 'apache2'
so 1.3 and 2.0 can coexist on such distributions.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@93936 13f79535-47bb-0310-9956-ffa450edef68