lib-signals: Redesigned how delayed signals are handled. Fixes signal handler hanging infinitely in write() when many signals were sent rapidly.
lib-signals: Redesigned how delayed signals are handled.
Fixes signal handler hanging infinitely in write() when many signals were
sent rapidly.

Distrotech/dovecot,Distrotech/dovecot,Distrotech/dovecot,Distrotech/dovecot,Distrotech/dovecot