v4.4.6

This is a pre-release version of evio-4.4.6, particularly for Hall D usage. The evio package has been maintained both here and on https://coda.jlab.org, with Hall D using the coda website for downloading its source code.

This is intended to be a minimal port of evio-4.4.6 as it exists on https://coda.jlab.org/drupal/system/files/coda/evio/[...]. However, there are a few minor caveats that shouldn't matter for running C/C++ libraries. See branch notes for more details.