make error tables const and separate header file

Run perltidy on util/mkerr
Change some mkerr flags, write some doc comments
Make generated tables "const" when genearting lib-internal ones.
Add "state" file for mkerr
Renerate error tables and headers
Rationalize declaration of ERR_load_XXX_strings
Fix out-of-tree build
Add -static; sort flags/vars for options.
Also tweak code output
Moved engines/afalg to engines (from master)
Use -static flag
Standard engine #include's of errors
Don't linewrap err string tables unless necessary

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3392)
diff --git a/engines/e_afalg_err.c b/engines/e_afalg_err.c
index ca394ed..18fe9c3 100644
--- a/engines/e_afalg_err.c
+++ b/engines/e_afalg_err.c
@@ -1,5 +1,6 @@
 /*
- * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Generated by util/mkerr.pl DO NOT EDIT
+ * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the OpenSSL license (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -7,105 +8,76 @@
  * https://www.openssl.org/source/license.html
  */
 
-/*
- * NOTE: this file was auto generated by the mkerr.pl script: any changes
- * made to it will be overwritten when the script next updates this file,
- * only reason strings will be preserved.
- */
-
-#include <stdio.h>
 #include <openssl/err.h>
 #include "e_afalg_err.h"
 
-/* BEGIN ERROR CODES */
 #ifndef OPENSSL_NO_ERR
 
-# define ERR_FUNC(func) ERR_PACK(0,func,0)
-# define ERR_REASON(reason) ERR_PACK(0,0,reason)
-
 static ERR_STRING_DATA AFALG_str_functs[] = {
-    {ERR_FUNC(AFALG_F_AFALG_CHK_PLATFORM), "afalg_chk_platform"},
-    {ERR_FUNC(AFALG_F_AFALG_CREATE_BIND_SK), "afalg_create_bind_sk"},
-    {ERR_FUNC(AFALG_F_AFALG_CREATE_BIND_SOCKET), "afalg_create_bind_sk"},
-    {ERR_FUNC(AFALG_F_AFALG_CREATE_SK), "afalg_create_sk"},
-    {ERR_FUNC(AFALG_F_AFALG_INIT_AIO), "afalg_init_aio"},
-    {ERR_FUNC(AFALG_F_AFALG_SETUP_ASYNC_EVENT_NOTIFICATION),
+    {ERR_PACK(0, AFALG_F_AFALG_CHK_PLATFORM, 0), "afalg_chk_platform"},
+    {ERR_PACK(0, AFALG_F_AFALG_CREATE_SK, 0), "afalg_create_sk"},
+    {ERR_PACK(0, AFALG_F_AFALG_INIT_AIO, 0), "afalg_init_aio"},
+    {ERR_PACK(0, AFALG_F_AFALG_SETUP_ASYNC_EVENT_NOTIFICATION, 0),
      "afalg_setup_async_event_notification"},
-    {ERR_FUNC(AFALG_F_AFALG_SET_KEY), "afalg_set_key"},
-    {ERR_FUNC(AFALG_F_AFALG_SOCKET), "afalg_socket"},
-    {ERR_FUNC(AFALG_F_AFALG_START_CIPHER_SK), "afalg_start_cipher_sk"},
-    {ERR_FUNC(AFALG_F_BIND_AFALG), "bind_afalg"},
+    {ERR_PACK(0, AFALG_F_AFALG_SET_KEY, 0), "afalg_set_key"},
+    {ERR_PACK(0, AFALG_F_BIND_AFALG, 0), "bind_afalg"},
     {0, NULL}
 };
 
 static ERR_STRING_DATA AFALG_str_reasons[] = {
-    {ERR_REASON(AFALG_R_EVENTFD_FAILED), "eventfd failed"},
-    {ERR_REASON(AFALG_R_FAILED_TO_GET_PLATFORM_INFO),
-     "failed to get platform info"},
-    {ERR_REASON(AFALG_R_INIT_FAILED), "init failed"},
-    {ERR_REASON(AFALG_R_IO_SETUP_FAILED), "io setup failed"},
-    {ERR_REASON(AFALG_R_KERNEL_DOES_NOT_SUPPORT_AFALG),
-     "kernel does not support afalg"},
-    {ERR_REASON(AFALG_R_KERNEL_DOES_NOT_SUPPORT_ASYNC_AFALG),
-     "kernel does not support async afalg"},
-    {ERR_REASON(AFALG_R_MEM_ALLOC_FAILED), "mem alloc failed"},
-    {ERR_REASON(AFALG_R_SOCKET_ACCEPT_FAILED), "socket accept failed"},
-    {ERR_REASON(AFALG_R_SOCKET_BIND_FAILED), "socket bind failed"},
-    {ERR_REASON(AFALG_R_SOCKET_CREATE_FAILED), "socket create failed"},
-    {ERR_REASON(AFALG_R_SOCKET_OPERATION_FAILED), "socket operation failed"},
-    {ERR_REASON(AFALG_R_SOCKET_SET_KEY_FAILED), "socket set key failed"},
+    {ERR_PACK(0, 0, AFALG_R_EVENTFD_FAILED), "eventfd failed"},
+    {ERR_PACK(0, 0, AFALG_R_FAILED_TO_GET_PLATFORM_INFO),
+    "failed to get platform info"},
+    {ERR_PACK(0, 0, AFALG_R_INIT_FAILED), "init failed"},
+    {ERR_PACK(0, 0, AFALG_R_IO_SETUP_FAILED), "io setup failed"},
+    {ERR_PACK(0, 0, AFALG_R_KERNEL_DOES_NOT_SUPPORT_AFALG),
+    "kernel does not support afalg"},
+    {ERR_PACK(0, 0, AFALG_R_KERNEL_DOES_NOT_SUPPORT_ASYNC_AFALG),
+    "kernel does not support async afalg"},
+    {ERR_PACK(0, 0, AFALG_R_MEM_ALLOC_FAILED), "mem alloc failed"},
+    {ERR_PACK(0, 0, AFALG_R_SOCKET_ACCEPT_FAILED), "socket accept failed"},
+    {ERR_PACK(0, 0, AFALG_R_SOCKET_BIND_FAILED), "socket bind failed"},
+    {ERR_PACK(0, 0, AFALG_R_SOCKET_CREATE_FAILED), "socket create failed"},
+    {ERR_PACK(0, 0, AFALG_R_SOCKET_OPERATION_FAILED),
+    "socket operation failed"},
+    {ERR_PACK(0, 0, AFALG_R_SOCKET_SET_KEY_FAILED), "socket set key failed"},
     {0, NULL}
 };
 
 #endif
 
-#ifdef AFALG_LIB_NAME
-static ERR_STRING_DATA AFALG_lib_name[] = {
-    {0, AFALG_LIB_NAME},
-    {0, NULL}
-};
-#endif
+static int lib_code = 0;
+static int error_loaded = 0;
 
-static int AFALG_lib_error_code = 0;
-static int AFALG_error_init = 1;
-
-void ERR_load_AFALG_strings(void)
+static int ERR_load_AFALG_strings(void)
 {
-    if (AFALG_lib_error_code == 0)
-        AFALG_lib_error_code = ERR_get_next_error_library();
+    if (lib_code == 0)
+        lib_code = ERR_get_next_error_library();
 
-    if (AFALG_error_init) {
-        AFALG_error_init = 0;
+    if (!error_loaded) {
 #ifndef OPENSSL_NO_ERR
-        ERR_load_strings(AFALG_lib_error_code, AFALG_str_functs);
-        ERR_load_strings(AFALG_lib_error_code, AFALG_str_reasons);
+        ERR_load_strings(lib_code, AFALG_str_functs);
+        ERR_load_strings(lib_code, AFALG_str_reasons);
 #endif
+        error_loaded = 1;
+    }
+    return 1;
+}
 
-#ifdef AFALG_LIB_NAME
-        AFALG_lib_name->error = ERR_PACK(AFALG_lib_error_code, 0, 0);
-        ERR_load_strings(0, AFALG_lib_name);
+static void ERR_unload_AFALG_strings(void)
+{
+    if (error_loaded) {
+#ifndef OPENSSL_NO_ERR
+        ERR_unload_strings(lib_code, AFALG_str_functs);
+        ERR_unload_strings(lib_code, AFALG_str_reasons);
 #endif
+        error_loaded = 0;
     }
 }
 
-void ERR_unload_AFALG_strings(void)
+static void ERR_AFALG_error(int function, int reason, char *file, int line)
 {
-    if (AFALG_error_init == 0) {
-#ifndef OPENSSL_NO_ERR
-        ERR_unload_strings(AFALG_lib_error_code, AFALG_str_functs);
-        ERR_unload_strings(AFALG_lib_error_code, AFALG_str_reasons);
-#endif
-
-#ifdef AFALG_LIB_NAME
-        ERR_unload_strings(0, AFALG_lib_name);
-#endif
-        AFALG_error_init = 1;
-    }
-}
-
-void ERR_AFALG_error(int function, int reason, char *file, int line)
-{
-    if (AFALG_lib_error_code == 0)
-        AFALG_lib_error_code = ERR_get_next_error_library();
-    ERR_PUT_error(AFALG_lib_error_code, function, reason, file, line);
+    if (lib_code == 0)
+        lib_code = ERR_get_next_error_library();
+    ERR_PUT_error(lib_code, function, reason, file, line);
 }