Workaround for IDE crash when uploading on Leonardo (and derivatives) on Linux

Author: cmaglie

app/src/cc/arduino/packages/uploaders/SerialUploader.java

@@ -141,7 +141,7 @@ public boolean uploadUsingPreferences(String buildPath, String className,
           // sketch serial port reconnects (or timeout after a few seconds if the
           // sketch port never comes back). Doing this saves users from accidentally
           // opening Serial Monitor on the soon-to-be-orphaned bootloader port.
-          Thread.sleep(500);
+          Thread.sleep(1000);
           long timeout = System.currentTimeMillis() + 2000;
           while (timeout > System.currentTimeMillis()) {
             List<String> portList = Serial.list();