Add a few more no-op stubs for cURL compatibility.

With these stubs, cURL should not need any BoringSSL #ifdefs at all,
except for their OCSP #ifdefs (which can switch to the more generally
useful OPENSSL_NO_OCSP) and the workaround for wincrypt.h macro
collisions. That we intentionally leave to the consumer rather than add
a partial hack that makes the build sensitive to include order.

(I'll send them a patch upstream once this cycles in.)

Change-Id: I815fe67e51e80e9aafa9b91ae68867ca1ff1d623
Reviewed-on: https://boringssl-review.googlesource.com/6980
Reviewed-by: Adam Langley <agl@google.com>
diff --git a/include/openssl/crypto.h b/include/openssl/crypto.h
index b421884..193c8c3 100644
--- a/include/openssl/crypto.h
+++ b/include/openssl/crypto.h
@@ -60,6 +60,9 @@
 /* ENGINE_load_builtin_engines does nothing. */
 OPENSSL_EXPORT void ENGINE_load_builtin_engines(void);
 
+/* OPENSSL_load_builtin_modules does nothing. */
+OPENSSL_EXPORT void OPENSSL_load_builtin_modules(void);
+
 
 #if defined(__cplusplus)
 }  /* extern C */