[wesnoth-commits] [wesnoth/wesnoth] 16022d: small connect_engine cleanup

[gfgtdf]

  Branch: refs/heads/1.14
  Home:   https://github.com/wesnoth/wesnoth
  Commit: 16022d571b1ee657533a8725526ab609bc635790
      https://github.com/wesnoth/wesnoth/commit/16022d571b1ee657533a8725526ab609bc635790
  Author: gfgtdf <daniel.gfgtdf at gmail.com>
  Date:   2020-06-20 (Sat, 20 Jun 2020)

  Changed paths:
    M src/game_initialization/connect_engine.cpp

  Log Message:
  -----------
  small connect_engine cleanup

The only attributes that were changed by side_engine::new_config() and
not in the attributes_to_trim list were "user_description" and "name" so
it is cleaner to just explicitly change them than to blacklist
everything else and do a merge.

Also with this it no longer merges subtags, which in particular fixes
Issue #3338 where the [ai] subtags were messed up.

This is a backport of e036cadf0b