new unit test for downloader - incomplete.
new unit test for downloader - incomplete.

WARNING: this test requires a fully functional pearweb server at address pear.Chiara, with several packages available for download.  This one will fail until Martin has time to set up test.pear.php.net as the server.


marcosptf/pear-core,marcosptf/pear-core,marcosptf/pear-core,marcosptf/pear-core,marcosptf/pear-core,marcosptf/pear-core