default connect_timeout to 5 instead of extlib 10

lib/default.php

@@ -353,6 +353,7 @@ $default =
         array('ssl_cafile' => false, // To enable SSL cert validation, point to a CA bundle (eg '/usr/lib/ssl/certs/ca-certificates.crt') (this activates "ssl_verify_peer")
               'ssl_verify_host' => true,    // HTTPRequest2 makes sure this is set to CURLOPT_SSL_VERIFYHOST==2 if using curl
               'curl' => false, // Use CURL backend for HTTP fetches if available. (If not, PHP's socket streams will be used.)
+              'connect_timeout' => 5,
               'proxy_host' => null,
               'proxy_port' => null,
               'proxy_user' => null,

lib/httpclient.php

@@ -121,6 +121,7 @@ class HTTPClient extends HTTP_Request2
 
     function __construct($url=null, $method=self::METHOD_GET, $config=array())
     {
+        $this->config['connect_timeout'] = common_config('http', 'connect_timeout') ?: $this->config['connect_timeout'];
         $this->config['max_redirs'] = 10;
         $this->config['follow_redirects'] = true;