Feature Request: Parseable output if gpg waits for lock

[Patrick Brunschwig]

Every now and then some user reports a problem to Enigmail because gpg
is hanging for no obvious reason, which then turns out to be gpg waiting
for the lock files to be deleted. The problem is that the output of gpg
("gpg: waiting for lock (held by NNNN - probably dead) ...") is on
STDERR, and there is no parseable output available via --status-fd X.

Would it be possible to add a status message, such as
[GNUPG:] WAITFORLOCK <pid>

It would enable applications to help users resolve the issue.

Thanks,
Patrick