The HTTP transport learned to react to "429 Too Many Requests".
Comments?
* vp/http-rate-limit-retries:
http: add support for HTTP 429 rate limit retries
remote-curl: introduce show_http_message_fatal() helper
strbuf_attach: fix call sites to pass correct alloc
strbuf: pass correct alloc to strbuf_attach() in strbuf_reencode()