Get rid of ejabberd.hrl header

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

include/logger.hrl

@@ -42,3 +42,6 @@
             false -> ok;
             _ -> 'Elixir.Logger':bare_log(error, io_lib:format(Format, Args), [?MODULE])
         end).
+
+%% Uncomment if you want to debug p1_fsm/gen_fsm
+%%-define(DBGFSM, true).

include/mod_muc_room.hrl

@@ -18,7 +18,7 @@
 %%%
 %%%----------------------------------------------------------------------
 
--include("ejabberd.hrl").
+-include("type_compat.hrl").
 
 -define(MAX_USERS_DEFAULT, 200).
 
@@ -67,7 +67,7 @@
     captcha_whitelist                    = (?SETS):empty() :: ?TGB_SET,
     mam                                  = false :: boolean(),
     pubsub                               = <<"">> :: binary(),
-    lang                                 = ?MYLANG :: binary()
+    lang                                 = ejabberd_config:get_mylang() :: binary()
 }).
 
 -type config() :: #config{}.

include/pubsub.hrl

@@ -18,8 +18,6 @@
 %%%
 %%%----------------------------------------------------------------------
 
--include("ejabberd.hrl").
-
 %% -------------------------------
 %% Pubsub constants
 -define(ERR_EXTENDED(E, C), mod_pubsub:extended_error(E, C)).

include/scram.hrl

@@ -0,0 +1,28 @@
+%%%----------------------------------------------------------------------
+%%%
+%%% ejabberd, Copyright (C) 2002-2018   ProcessOne
+%%%
+%%% This program is free software; you can redistribute it and/or
+%%% modify it under the terms of the GNU General Public License as
+%%% published by the Free Software Foundation; either version 2 of the
+%%% License, or (at your option) any later version.
+%%%
+%%% This program is distributed in the hope that it will be useful,
+%%% but WITHOUT ANY WARRANTY; without even the implied warranty of
+%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+%%% General Public License for more details.
+%%%
+%%% You should have received a copy of the GNU General Public License along
+%%% with this program; if not, write to the Free Software Foundation, Inc.,
+%%% 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+%%%
+%%%----------------------------------------------------------------------
+
+-record(scram, {storedkey = <<"">> :: binary(),
+		serverkey = <<"">> :: binary(),
+		salt = <<"">>      :: binary(),
+		iterationcount = 0 :: integer()}).
+
+-type scram() :: #scram{}.
+
+-define(SCRAM_DEFAULT_ITERATION_COUNT, 4096).

include/type_compat.hrl

@@ -18,41 +18,6 @@
 %%%
 %%%----------------------------------------------------------------------
 
--ifndef(EJABBERD_HRL).
--define(EJABBERD_HRL, true).
-
--define(VERSION, ejabberd_config:get_version()).
-
--define(MYHOSTS, ejabberd_config:get_myhosts()).
-
--define(MYNAME, hd(ejabberd_config:get_myhosts())).
-
--define(MYLANG, ejabberd_config:get_mylang()).
-
--define(MSGS_DIR, filename:join(["priv", "msgs"])).
-
--define(SQL_DIR, filename:join(["priv", "sql"])).
-
--define(CONFIG_PATH, <<"ejabberd.yml">>).
-
--define(LOG_PATH, "ejabberd.log").
-
--define(EJABBERD_URI, <<"http://www.process-one.net/en/ejabberd/">>).
-
--define(COPYRIGHT, "Copyright (c) ProcessOne").
-
-%%-define(DBGFSM, true).
-
--record(scram,
-	{storedkey = <<"">>,
-         serverkey = <<"">>,
-         salt = <<"">>,
-         iterationcount = 0 :: integer()}).
-
--type scram() :: #scram{}.
-
--define(SCRAM_DEFAULT_ITERATION_COUNT, 4096).
-
 -ifdef(ERL_DEPRECATED_TYPES).
 
 -define(TDICT, dict()).
@@ -68,5 +33,3 @@
 -define(TQUEUE, queue:queue()).
 
 -endif.
-
--endif.