Snapshotting the work in this branch. I'll merge it again later as we
get closer to the release.
* origin/topic/dnthayer/doc-changes-for-2.2: (29 commits)
Add README files for base/protocols
Fix incorrect uses of reST directives
Fix typos and formatting in the BiFs docs
Fix typos and formatting in the base/utils docs
Fix typos and formatting in the other protocol docs
Fix typos and formatting in the ssl protocol docs
Fix typos and formatting in the http protocol docs
Fix typos and formatting in the ftp protocol docs
Fix typos and formatting in the dns protocol docs
Fix typos and formatting in the dhcp protocol docs
Adjust line numbers to match changes in conn/main.bro
Fix typos and formatting in the conn protocol docs
Update FreeBSD install instructions
Improvements to file analysis docs
Add README files for most Bro frameworks
Fix typos and formatting in various other framework docs
Fix typos and formatting in the software framework docs
Fix typos and formatting in the sumstats docs
Fix typos and formatting in the packet filter docs
Fix typos and formatting in the logging framework docs
...
The text from these README files appears on the "Bro Script Packages"
page after building the documentation. The text for these was mostly just
copied from the existing docs.