The final phases of the great 'quad' update.

ap_snprintf() can now handle quads, assuming the compiler knows
about them, and we now determine which type is the off_t
typedef


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@83231 13f79535-47bb-0310-9956-ffa450edef68