since the md5sums of the original files are recorded in /var/db/pkg/, it is kind of trivial to see if the md5sum's of the files in /etc/ match the md5sum of the file when first placed in /etc/ i never touch certain files such as /etc/devfsd.conf or /etc/inputrc, and if newer versions are put out, i replace the old ones without a second thought. i guess since some people would not like this idea, a variable could be created that would be placed into FEATURES in /etc/make.globals 'autoetc' or something ... i cant think of a short name to describe this ;)
*** This bug has been marked as a duplicate of 4709 ***