update on phar extension work

Hi, A short update on improvements to phar * Phar::webPhar() now works with CGI sapi (endless redirect happened before) * Phar::webPhar() now recognizes urls exactly the same way as apache, so http://localhost/myphar.phar/file.php/extra/stuff will find "file.php" hidden in the url and retrieve it. * Phar::mungServer() was incorrectly making SCRIPT_NAME the same as SCRIPT_FILENAME, now it is the value expected. * Phar::webPhar()'s $rewrite parameter is documented as an array of path names to actual location. This is too inflexible, and has instead been replaced with a simple callback. A php function that takes a string as an argument and returns the actual path expected is used. In addition, if the function returns false, webPhar() will throw an HTTP 403 Denied code, so sections of a phar archive can be marked as off limits. This solves a problem of not having a protected out of document root webspace inside a phar archive. There are some memory leaks to clean up, and a few other problems, but we're making progress. I have a backlog of a few apps sent offline that don't quite work that I need to debug to determine what is causing the breakage, more on that later. Greg