Update the built-in php function dictionaries

The current "g:php_builtin_functions" and especially "g:php_builtin_object_functions" are rather lacklustre. They have escaped html entities in them and most of the built in objects are just plain missing.

I've created a PHP script that can extract the function or method names with parameter list and return type from the offical "Many HTML Files" documentation archive. Please consider adding this to the project. By moving these dictionaries to external files and loading them in with "runtime!" the whole upgrade process can be automated.

The commits move the dictionaries to separate files under "misc" and add the generator script under "bin".