size_t and 64 bit integer branch

Hi, the branch with size_t for string length and 64 bit integer replacement for long datatype was brought so far. This branch is based on the one started by Anthony Ferrara. Compiled with --disable-all --enable-cli this functionality is already available. Except of a couple of edge cases, the tests pass on both 64 bit Windows and Linux. The implementation is ready as a solid base for the further porting. There are several new macros and typedefs to handle 64 bit compatibility. All those are placeholders which can be easily renamed later, if needed. There is a wiki page indicating the current progress and containing quick start instructions: https://wiki.php.net/rfc/string-size_t/progress As the base does exist now, I'd like to call the maintainers and developers to participate on further porting of the core extensions and SAPIs. Many of those should be easy to convert. Any reviews and comments on what is done are of course welcome, too. The new era of PHP is coming, do your part! :) Cheers Anatol