Add MACRO option to asterisk16 to enable compiling the app_macro
module.

Make the option default to on.

This module used to be present by default in older asterisk versions
and even though the module is deprecated and disabled by default
upstream now, it's required by many asterisk tools to work properly,
so provide it in the binary package by default for the time being.

Requested by: admin@wildwolf.ru,

		lidl