Previous implementation of both functions was blocking and caused guest
freezes / crashes on host clipboard owner change.
* use callbacks instead of waiting for GTK to deliver
clipboard content type evaluation and contents
* evaluate a serial in the info struct to discard old events
Fixes: d1
Previous implementation of both functions was blocking and caused guest
freezes / crashes on host clipboard owner change.
* use callbacks instead of waiting for GTK to deliver
clipboard content type evaluation and contents
* evaluate a serial in the info struct to discard old events
Fixes: d1
