Fix compile on win32 at least.

WS fix

Fix FCI cache for array_walk and user array compare functions. Bug
#33286. (Patch from m.bretz@metropolis-ag.de)

Fixed memory allocation bugs in array_reduce() with initial value (#22463 & #24980)

add function array_product()

Fixed call to estrndup() with invalid length

fix #30833 (array_count_values modifying input array)

Simplify argument checking code for array_combine().

- Check another incarnation of bug #30266

Fixed #30871

- Do not touch return_valu's refcount or is_ref

Check that object can actually return a class entry. I need this for a
class-entry-less helper objects that should not be present in the class
table.

- Fixed bug #32021: Crash caused by range('', 'z')

fix segfault when retval_ptr is empty - such as when exception thrown

fix memory leak if function call fails

destroy return_value and fix leak in array_fill()

fix leak (init array only if we got valid start key)

fix array_walk_recursive() so it doesn't reuse cached fci between calls
and add test for it

revert my previous patch as it breaks more than fixes

fix #29954 (array_reduce segfaults when initial value is array)

fix bug #30587 (array_multisort doesn't separate zvals before changing them)

- Remove doubled definition

- Add some comment

- Allow direct access to spl class entries (SPL cannot be build shared)

- Use new way for global variables
- Cache class lookup