improved startup speed by using ale:with_compilation_batching

Which eliminates about 4 seconds from startup time on my box by
batching logging configuration compilations.

Change-Id: Iee1b0dfd0c0762756fd3bee7ad4603278030e258
Reviewed-on: http://review.couchbase.org/42359
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Reviewed-by: Aliaksey Artamonau <aliaksiej.artamonau@gmail.com>