Per policy, packages shouldn't contain directories in /run. This means
/run/mosquitto should be created at boot time. Closes #983429.

This is already handled with debian/mosquitto.conf

Closes #2066. Thanks to Boris Vanhoof.

Closes #2057. Thanks to Przemysław Zygmunt.

Closes #2059. Thanks to Jason White.

Closes #2056. Thanks to Greg Troxel.

This now handles the case where we are building from the released tar, or
building from git if xsltproc is available, or building from git if xsltproc
is not available.

Unconditionally adding an event to the epoll causes 100% CPU usage. This happens when the connection to the server is established and the client has not sent any data yet.

Signed-off-by: Przemek Zygmunt <p.zygmunt@acsoftware.pl>

Closes #2043. Thanks to ttsorensen.

Closes #2037. Thanks to Greg Troxel.

The two licenses are the same.

The error topic-alias-invalid was being sent if an MQTT v5 client published
a message with empty topic and topic alias set, but the topic alias hadn't
already been configured on the broker. This has been fixed to send a
protocol error, as per section 3.3.4 of the specification.

Closes #2022. Thanks to Umberto Morelli.

This is only possible where they have different bind addresses.

Closes #2029. Thanks to Simon Aldrich.

Fix cmake not building correctly when WITH_CJSON=OFF

When using cmake to build the project, cJson discovery
should only be performed if WITH_CJSON=ON.

Closes #2026.

Signed-off-by: Boris Feinstein <madhat1@gmail.com>

Closes #2017. Thanks to Craig Leres.

Produce an error when requesting a new password if both
attempts do not match.

Closes #2011. Thanks to Willem Eradus.

Closes #2010. Thanks to Willem Eradus.

This is when building with systemd support on Linux.

Closes #2019. Thanks to Mark Symmes.

Closes #2020. Thanks to FozzTexx.

This happened in `mosquitto_broker_publish` and
`mosquitto_broker_publish_copy` only.

This could have occurred when a will delay interval had been set.