Upgrade Solr for WP to 0.5.1

...solr-for-wordpress/SolrPhpClient/Apache/Solr/Document.php

...olr-for-wordpress/SolrPhpClient/Apache/Solr/Exception.php

...ress/SolrPhpClient/Apache/Solr/HttpTransport/Abstract.php

...ordpress/SolrPhpClient/Apache/Solr/HttpTransport/Curl.php

...s/SolrPhpClient/Apache/Solr/HttpTransport/CurlNoReuse.php

...lrPhpClient/Apache/Solr/HttpTransport/FileGetContents.php

...ess/SolrPhpClient/Apache/Solr/HttpTransport/Interface.php

...ress/SolrPhpClient/Apache/Solr/HttpTransport/Response.php

...ress/SolrPhpClient/Apache/Solr/HttpTransportException.php

...ss/SolrPhpClient/Apache/Solr/InvalidArgumentException.php

...SolrPhpClient/Apache/Solr/NoServiceAvailableException.php

...r-wordpress/SolrPhpClient/Apache/Solr/ParserException.php

...solr-for-wordpress/SolrPhpClient/Apache/Solr/Response.php

.../solr-for-wordpress/SolrPhpClient/Apache/Solr/Service.php

...-wordpress/SolrPhpClient/Apache/Solr/Service/Balancer.php

wp-content/plugins/solr-for-wordpress/SolrPhpClient/COPYING

...ordpress/SolrPhpClient/tests/Apache/Solr/DocumentTest.php

...hpClient/tests/Apache/Solr/HttpTransport/AbstractTest.php

...lient/tests/Apache/Solr/HttpTransport/CurlNoReuseTest.php

...olrPhpClient/tests/Apache/Solr/HttpTransport/CurlTest.php