Zend engine update

Be advised :) Zeev --- The patch we promised - redesigned the compilation/execution API: Advantages: - Smaller memory footprint for the op arrays - Slightly faster compilation times (due to saved erealloc() calls and faster zend_op initialization) - include_once() & require_once() share the same file list - Consistency between include() and require() - this mostly means that return() works inside require()'d files just as it does in include() files (it used to be meaningless in require()'d files, most of the time (see below)) - Made require() consistent with itself. Before, if the argument was not a constant string, require() took the include() behavior (with return()). - Removed lots of duplicate code. Bottom line - require() and include() are very similar now; require() is simply an include() which isn't allowed to fail. Due to the erealloc() calls for large op arrays, require() didn't end up being any faster than include() in the Zend engine. -- Zeev Suraski <zeev@zend.com> http://www.zend.com/