BUILD: ssl: disable OCSP when using boringssl

Google's boringssl doesn't currently support OCSP, so
disable it if detected.

OCSP support may be reintroduced as per:
https://code.google.com/p/chromium/issues/detail?id=398677

In that case we can simply revert this commit.

Signed-off-by: Lukas Tribus <luky-37@hotmail.com>
diff --git a/src/dumpstats.c b/src/dumpstats.c
index 5365042..3855e09 100644
--- a/src/dumpstats.c
+++ b/src/dumpstats.c
@@ -1794,7 +1794,7 @@
 #ifdef USE_OPENSSL
 		else if (strcmp(args[1], "ssl") == 0) {
 			if (strcmp(args[2], "ocsp-response") == 0) {
-#ifdef SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB
+#if (defined SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB && !defined OPENSSL_IS_BORINGSSL)
 				char *err = NULL;
 
 				/* Expect one parameter: the new response in base64 encoding */