AMFEXT patch

I know this is hardly much of a fix, but it at least compiles on windows and OSX. Attached please find my first patch for AMFEXT. I'll try checking it into SVN in a bit. I have successfully compiled it on my Win XP desktop using SDK 6.1 and 32-bit compilers and I have also compiled it successfully on OSX 10.5. It reflects some changes I've made as well as some contributions [which I don't fully understand] from a guy named Mikko on irc:#php.pecl. I have attached an svn diff patch to this email. The changes include the following 1) Changed references to ZVAL_ADDREF, ZVAL_DELREF, and ZVAL_REFCOUNT to Z_ADDREF, Z_DELREF and Z_REFCOUNT, respectively per Gustavo Lopes' sagacious instruction. Added conditional declarations of the new macros per Michael Maclean's generous suggestion. This is what permits compilation in my WinXP environment. 2) Added REGISTER_LONG_CONSTANT declarations to PHP_MINIT_FUNCTION so that these flag constants are available within PHP. I reckon there should be more added but am not sure which yet. 3) Changes made by Mikko to remove reference to zend_get_parameters_ex in favor of zend_parse_parameters. There are still 6 instances of the older funtion which I'd like to work on but I'll need some time to understand exactly what's going on in the code. 4) Re-ordering of code so that constant declarations precede MINIT function in which they are used. Sorry for the delay. I took a trip to the hospital last week. AMFEXT still has a variety of problems but this is a start.