Log Message:
ham/trustedQSL: Update to 2.5.8 and rationalize cmake usage

Drop an explicit do-configure in favor of what is now the built-in
standard approach.  This resolves failure to use RELRO.  It remains to
clean up the cmake variable defiitions; this is more of a mechanical
translation of the old form to the new.

Upstream changes: there is no news, but the changes are expected to be
bugfixes and minor improvements.