Since we now require R19, we shouldn't need that anymore.
There are still couple places where p1_time_compat:unique_timestamp() is
used as there is no direct equivalent.
Since we now use Lua scripting for cleaning up c2s sessions
the minimum supported Redis version is 3.2.0 or above because
we need to work correctly with Redis replication mechanism.
****** BACKWARD INCOMPATIBILITY WARNING *******
** THIS SHOULD BE ADDED TO THE RELEASE NOTES **
*** PACKAGE MAINTAINERS SHOULD BE INFORMED ***
***********************************************
The header consisted of too many unrelated stuff and macros misuse.
Some stuff is moved into scram.hrl and type_compat.hrl.
All macros have been replaced with the corresponding function calls.
TODO: probably type_compat.hrl is not even needed anymore since
we support only Erlang >= OTP 17.5
The commit introduces the following changes:
* Now there is no need to pass validating function in
ejabberd_config:get_option() functions, because the configuration
keeps already validated values.
* New function ejabberd_config:get_option/1 is introduced
* Function ejabberd_config:get_option/3 is deprecated. If the function
is still called, the second argument (validating function) is simply
ignored.
* The second argument for ejabberd_config:get_option/2 is now
a default value, not a validating function.
