API CHANGE HTTP::setGetVar() combines any GET parameters in PHP array notation (e.g. "foo[bar]=val") instead of replacing the whole array (merged from r98373)
BUGFIX HTTP::setGetVar() uses parse_url() and http_build_query() to add query parameters to an existing URL, instead of doing its own regex-based parsing. This means existing GET parameters are correctly url encoded. (merged from r98373)
git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/branches/2.3@98375 467b73ca-7a2a-4603-9d3b-597d59a354a9