qt: Support changing expiry of subkeys
* lang/qt/src/changeexpiryjob.h (ChangeExpiryJob::start): New overload that accepts subkeys (with empty implementation). * lang/qt/src/qgpgmechangeexpiryjob.h, lang/qt/src/qgpgmechangeexpiryjob.cpp (QGpgMEChangeExpiryJob::start): New overload that accepts subkeys.
This adds the possibility to change the expiry of subkeys.
- GnuPG-bug-id: T4717