Merge branch 'release-5.0' into release-5.1

# Conflicts:
#	documentation/sphinx/source/downloads.rst
#	documentation/sphinx/source/release-notes.rst
#	versions.target

fdbrpc/BlobStore.actor.cpp

@@ -471,6 +471,10 @@ ACTOR Future<Reference<HTTP::Response>> doRequest_impl(Reference<BlobStoreEndpoi
 			 .detail("ThisTry", thisTry)
 			 .suppressFor(15, true);
 
+		// If r is not valid or not code 429 then increment the try count.  429's will not count against the attempt limit.
+		if(!r || r->code != 429)
+			++thisTry;
+
 		// We will wait delay seconds before the next retry, start with nextRetryDelay.
 		double delay = nextRetryDelay;
 		// Double but limit the *next* nextRetryDelay.