Upcoming changes to kdelibs_frameworks_qt5 on CI

[Ben Cooksley]

Hi all,

To allow for two build variations of kdelibs, frameworks branch to be
built, it will be necessary to reconfigure the current Jenkins job. As
part of this reconfiguration, all current results will be lost (or at
the very least, archived)

The two proposed variations are a C++11 build, and a ordinary build (C99).
Please let me know if this will cause any issues.

Regards,
Ben