Updating submodule(s).

 [nomail]
rename the dbname configuration option to tablename.

Sorry for this - I noticed that I named this option quite unfortunately
while writing the documentation.

The patch also removes the dbname configuration option from the sqlite
input reader - it was not used there at all anymore (and I did not notice
that).
add check that the SQLite reader is only used in MANUAL reading mode
First try at sqlite reader/writer documentation
and restructure it a bit
and provide a bit of motivation to try the last example.
Merge remote-tracking branch 'origin/topic/bernhard/input-documentation'

* origin/topic/bernhard/input-documentation:
  and provide a bit of motivation to try the last example.
  and restructure it a bit
  First try at sqlite reader/writer documentation
  add check that the SQLite reader is only used in MANUAL reading mode
  rename the dbname configuration option to tablename.
Merge remote-tracking branch 'origin/topic/dnthayer/doc-changes-for-2.2'

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
  ...
Updating test baseline.
Moving the SQLite examples into separate Bro files to turn them into
sphinx-btest tests.

It's hard to make sure these are actually working as expected, but the
tests now at least make sure things parse correctly.