qt,tests: Add asyncDone signal to base class of all tests
* lang/qt/tests/t-support.h (class QGpgMETest): Add signal asyncDone. * lang/qt/tests/t-changeexpiryjob.cpp, lang/qt/tests/t-encrypt.cpp, lang/qt/tests/t-import.cpp, lang/qt/tests/t-keylist.cpp, lang/qt/tests/t-keylocate.cpp, lang/qt/tests/t-ownertrust.cpp, lang/qt/tests/t-remarks.cpp, lang/qt/tests/t-tofuinfo.cpp, lang/qt/tests/t-trustsignatures.cpp, lang/qt/tests/t-various.cpp, lang/qt/tests/t-wkdlookup.cpp, lang/qt/tests/t-wkspublish.cpp: Remove signal asyncDone from the test classes.
This reduces duplication and makes it possible to use the signal in
the base class.
- GnuPG-bug-id: T5770