Change compactor port line length to 1024

So that instead of having 3 lines in the log per database
compaction, there's a single one.

Before:

[couchdb:info,2013-06-01T16:34:09.815,n_0@127.0.0.1:<0.15773.2>:couch_log:info:39]Native compactor output: Compacted /home/fdmanana/couchbase/202/ns_server/data/n_0/data/default/21.couch.
[couchdb:info,2013-06-01T16:34:09.815,n_0@127.0.0.1:<0.15773.2>:couch_log:info:39]Native compactor output: 46 -> /home/fdmanana/couchbase/202/ns_server/data/n_0/data/default/21.couch.46.c
[couchdb:info,2013-06-01T16:34:09.815,n_0@127.0.0.1:<0.15773.2>:couch_log:info:39]Native compactor output: ompact

After:

[couchdb:info,2013-06-05T11:22:02.112,n_0@127.0.0.1:<0.15773.2>:couch_log:info:39]Native compactor output: Compacted /home/fdmanana/couchbase/202/ns_server/data/n_0/data/default/21.couch.46 -> /home/fdmanana/couchbase/202/ns_server/data/n_0/data/default/21.couch.46.compact

Change-Id: Ia7b84ac1312431d825fd236bff681e55e4753088
Reviewed-on: http://review.couchbase.org/26745
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Volker Mische <volker.mische@gmail.com>
Tested-by: Filipe David Borba Manana <fdmanana@gmail.com>