After auto init, check that the deprecated functions exist before using

The functions that have been deprecated by the auto init changes are
now guarded with deprecation checks, so it's fairly easy to see if
they can be used.

In test/dtlsv1listentest, we simply remove all init and cleanup code,
as they are call automatically when needed.
Reviewed-by: NMatt Caswell <matt@openssl.org>

crypto/engine/eng_all.c

@@ -64,29 +64,30 @@ void ENGINE_load_builtin_engines(void)
     /* Some ENGINEs need this */
     OPENSSL_cpuid_setup();
 #if !defined(OPENSSL_NO_HW) && (defined(__OpenBSD__) || defined(__FreeBSD__) || defined(HAVE_CRYPTODEV))
+# ifdef ENGINE_load_cryptodev
     ENGINE_load_cryptodev();
+# endif
 #endif
 #ifndef OPENSSL_NO_RDRAND
+# ifdef ENGINE_load_rdrand
     ENGINE_load_rdrand();
+# endif
 #endif
+# ifdef ENGINE_load_dynamic
     ENGINE_load_dynamic();
+# endif
 #ifndef OPENSSL_NO_STATIC_ENGINE
 # ifndef OPENSSL_NO_HW
-/*-
- * These engines have been disabled as they do not currently build
-#ifndef OPENSSL_NO_HW_NCIPHER
-        ENGINE_load_chil();
-#endif
-#ifndef OPENSSL_NO_HW_UBSEC
-        ENGINE_load_ubsec();
-#endif
-*/
 #  ifndef OPENSSL_NO_HW_PADLOCK
+#   ifdef ENGINE_load_padlock
     ENGINE_load_padlock();
+#   endif
 #  endif
 # endif
 # if defined(OPENSSL_SYS_WIN32) && !defined(OPENSSL_NO_CAPIENG)
+#  ifdef ENGINE_load_capi
     ENGINE_load_capi();
+#  endif
 # endif
 #endif
     ENGINE_register_all_complete();

test/dtlsv1listentest.c

@@ -379,10 +379,6 @@ int main(void)
     int ret, success = 0;
     size_t i;
 
-    /* Initialise libssl */
-    SSL_load_error_strings();
-    SSL_library_init();
-
     ctx = SSL_CTX_new(DTLS_server_method());
     if (ctx == NULL || peer == NULL)
         goto err;
@@ -461,15 +457,6 @@ int main(void)
     SSL_CTX_free(ctx);
     BIO_free(inbio);
     OPENSSL_free(peer);
-    /* Unitialise libssl */
-#ifndef OPENSSL_NO_ENGINE
-    ENGINE_cleanup();
-#endif
-    CONF_modules_unload(1);
-    CRYPTO_cleanup_all_ex_data();
-    EVP_cleanup();
-    ERR_remove_thread_state(NULL);
-    ERR_free_strings();
 #ifndef OPENSSL_NO_CRYPTO_MDEBUG
     CRYPTO_mem_leaks_fp(stderr);
 #endif