throw exceptions for curl errors

What steps will reproduce the problem?
1. make a request for a server that's unavailable

What is the expected output? What do you see instead?
Expected: An exception with the curl error message
Actually: An empty string as the ['body'] of doRequest()

What version of the product are you using? On what operating system?
98

Please provide any additional information below.
The result from curl_exec() should be caught by comparing it to false.

Original issue reported on code.google.com by tjerk.me...@gmail.com on 11 Mar 2010 at 6:36

qianqiusui126 / oauth-php

throw exceptions for curl errors #31