List 3.9.x as a supported version, drop 3.7.x

since 3.7 has been out of support for a while.

Closes rabbitmq#172

Merge pull request rabbitmq#163 from mwfriedm/master

Use the rabbit_table facility to defer timeout to configuration value

(cherry picked from commit bdbd22c)

Merge pull request rabbitmq#150 from rabbitmq/binding-recovery-fix

Explicitly recover binding on plugin init

(cherry picked from commit 4d838f3)

rabbitmq-delayed-message-exchange v3.8.0

Update rabbitmq-components.mk

Update rabbitmq-components.mk

Update rabbitmq-components.mk

Update rabbitmq-components.mk

Update rabbitmq-components.mk

Update erlang.mk