Hello,

I am trying to upload a file with the file name having special characters using jets3t 0.9.4 jar. It fails with error "SignatureDoesNotMatch".
`
AWSCredentials awsCredentials = new AWSCredentials(accessKey, secretKey);
RestS3Service s3Service = new RestS3Service(awsCredentials);

    S3Bucket[] myBuckets = s3Service.listAllBuckets();
    for (int i = 0; i < myBuckets.length; i++) {
        //System.out.println(myBuckets[i].getName());
    }

    StorageObject object = new StorageObject("test@t.txt");
    StorageObject obj = s3Service.putObject("testbucket", object);
    System.out.println(obj.toString());`

Exception:
Exception in thread "main" org.jets3t.service.ServiceException: Service Error Message. -- ResponseCode: 403, ResponseStatus: Forbidden, XML Error Message: SignatureDoesNotMatchThe request signature we calculated does not match the signature you provided. Check your key and signing method.
at org.jets3t.service.impl.rest.httpclient.RestStorageService.performRequest(RestStorageService.java:409)
at org.jets3t.service.impl.rest.httpclient.RestStorageService.performRequest(RestStorageService.java:279)
at org.jets3t.service.impl.rest.httpclient.RestStorageService.performRestPut(RestStorageService.java:1157)
at org.jets3t.service.impl.rest.httpclient.RestStorageService.createObjectImpl(RestStorageService.java:1968)
at org.jets3t.service.impl.rest.httpclient.RestStorageService.putObjectWithRequestEntityImpl(RestStorageService.java:1889)
at org.jets3t.service.impl.rest.httpclient.RestStorageService.putObjectImpl(RestStorageService.java:1881)
at org.jets3t.service.StorageService.putObject(StorageService.java:840)