This reverts commit 1302a0bc.

This commit prevents CI from passing for Python 2.7, and another user submitted a better (temporary) fix.

This reverts commit 7cdb2477.

to provide X509 credential discovery methods. that package has minimal dependencies so doesn't add any burden on dqsegdb.

Requiring Updated pyOpenSSL in setup.py only, to fix pip installations on systems where OpenSSL is more up to date.  CIT cluster is still running on pyOpenSSL 0.13.1, but the OpenSSL version is old enough that this still is functional, so we will not update the requirements in the RPM or Debian packaging files yet.

this change makes the DQSegDBInstall command a bit more standalone, and a bit more robust, by having it take care of appending the etc files to the data_files list itself, rather than having to manually specify them in the `setup()` call

M2Crypto isn't available for python3

Glue is the wrong package because in pypi, glue is not the ligo glue package.  Once Leo's suggested changes to Glue are reviewed, we can add back in ligo-glue as a pypi requirement.  That will require new w

    - this should enable user env scripts whilst not breaking bdist

This reverts commit 00d0a64d.

This reverts commit 9b90adf3.

    - writes etc/dqsegdb_user_env.{sh,csh} to set PATH and PYTHONPATH

    - utils/version.py trolls git info to generate dqsegdb/version.py
    - added .gitignore with basic information
    - setup.py generates version information and installs with
      dependency tracking