remove extra stuff that I don't think we need because we are the source.
Also unconditionally call zmupdate.pl since it should do all the checking of versions to see if anything needs doing.
We don't need to be doing that work in a postinst bash script.
bump version # for snapshot
Merge pull request #240 from ZoneMinder/postinstcleanup

remove extra stuff that I don't think we need because we are the source.