iauthd-c v1.0.4

iauthd-c version 1.0.4 is a bugfix and diagnostic-adding release.

It corrects the prefix used to generate IAuth statistics reports, corrects several reference counting bugs, releases some "singleton" memory that was previously not released before exit, adds some statistics for repeated memory
allocations, adds an additional unit test (revealing no bugs), and fixes compilation under GCC 8.