phar development update

Hi all, A quick note on significant improvements to phar committed recently: * tar-based archives now fully support metadata and signatures, bringing them in line with more of the features of phar-based phar archives. * true asymmetric signing support using OpenSSL private/public key pairs * phar.cache_list provides pre-parsing of phar manifests at MINIT, with performance enhancement that matches on-disk for non-APC and improves perf to 19 req/sec (in-phar) vs. 28 req/sec (on-disk) in my benching of phpMyAdmin with APC. This performance benefit only accrues with webservers that run MINIT once and then spawn other processes/threads with RINIT. Also, Scott is working on a patch to sqlite that will allow using databases mounted inside a phar archive with a phar url, which will greatly simplify pharring apps that use sqlite. Greg