PHP 5.1.2

I upgraded vis.nu’s PHP installation to 5.1.2, straight from the 5.0 series.   The intervening versions did not compile cleanly on OpenBSD, and I never got around to figuring out what the problem is before 5.1.2 came out.   There are some interesting changes in this subversion, so if you see anything acting incorrectly, please let me know.