Add a method clearCredentials() to OwnCloudClient that is used to detect authentication expected by the server instead of setBasicCredentials('', '')

owncloud-android-library

@@ -1 +1 @@
-Subproject commit 1ef3a0176cc870d3cb26a77652b7ae9fd79584ce
+Subproject commit 0cf283526820c0f056f8f5e6c1c1fcc09bb55262

src/com/owncloud/android/operations/DetectAuthenticationMethodOperation.java

@@ -94,7 +94,7 @@ public class DetectAuthenticationMethodOperation extends RemoteOperation {
         
         RemoteOperation operation = new ExistenceCheckRemoteOperation("", mContext, false);
         client.setWebdavUri(Uri.parse(mWebDavUrl));
-        client.setBasicCredentials("", "");
+        client.clearCredentials();
         client.setFollowRedirects(false);
         
         // try to access the root folder, following redirections but not SAML SSO redirections