This change replaces the ENGINE's underlying mechanics with the new

ENGINE_TABLE-based stuff - as described in crypto/engine/README.

Associated miscellaneous changes;
 - the previous cipher/digest hooks that hardwired directly to EVP's
   OBJ_NAME-based storage have been backed out. New cipher/digest support
   has been constructed and will be committed shortly.
 - each implementation defines its own ENGINE_load_<name> function now.
 - the "openssl" ENGINE isn't needed or loaded any more.
 - core (not algorithm or class specific) ENGINE code has been split into
   multiple files to increase readability and decrease linker bloat.
 - ENGINE_cpy() has been removed as it wasn't really a good idea in the
   first place and now, because of registration issues, can't be
   meaningfully defined any more.
 - BN_MOD_EXP[_CRT] support is removed as per the README.
 - a bug in enginetest.c has been fixed.

NB: This commit almost certainly breaks compilation until subsequent
changes are committed.

crypto/engine/eng_err.c

@@ -1,6 +1,6 @@
 /* crypto/engine/eng_err.c */
 /* ====================================================================
- * Copyright (c) 1999-2001 The OpenSSL Project.  All rights reserved.
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -90,6 +90,7 @@ static ERR_STRING_DATA ENGINE_str_functs[]=
 {ERR_PACK(0,ENGINE_F_ENGINE_SET_DEFAULT_TYPE,0),	"ENGINE_SET_DEFAULT_TYPE"},
 {ERR_PACK(0,ENGINE_F_ENGINE_SET_ID,0),	"ENGINE_set_id"},
 {ERR_PACK(0,ENGINE_F_ENGINE_SET_NAME,0),	"ENGINE_set_name"},
+{ERR_PACK(0,ENGINE_F_ENGINE_TABLE_REGISTER,0),	"ENGINE_TABLE_REGISTER"},
 {ERR_PACK(0,ENGINE_F_ENGINE_UNLOAD_KEY,0),	"ENGINE_UNLOAD_KEY"},
 {ERR_PACK(0,ENGINE_F_INT_CTRL_HELPER,0),	"INT_CTRL_HELPER"},
 {ERR_PACK(0,ENGINE_F_LOG_MESSAGE,0),	"LOG_MESSAGE"},