qt: Add job to set the primary user ID of OpenPGP keys
* lang/qt/src/qgpgmesetprimaryuseridjob.cpp, lang/qt/src/qgpgmesetprimaryuseridjob.h, lang/qt/src/setprimaryuseridjob.h: New. * lang/qt/src/protocol.h (class Protocol): Add pure virtual member function setPrimaryUserIDJob. * lang/qt/src/protocol_p.h (Protocol::setPrimaryUserIDJob): New. * lang/qt/src/job.cpp, lang/qt/src/Makefile.am: Update accordingly. * lang/qt/tests/t-setprimaryuserid.cpp: New. * lang/qt/tests/Makefile.am: Add new test.
- GnuPG-bug-id: T5938