Drop zend_long64 in favor of int64_t

Also drop ZEND_HAVE_LONG64, because we already require the
presence of a int64_t type.

Zend/zend_multiply.h

@@ -84,10 +84,10 @@
 	}																\
 } while (0)
 
-#elif SIZEOF_ZEND_LONG == 4 && defined(HAVE_ZEND_LONG64)
+#elif SIZEOF_ZEND_LONG == 4
 
 #define ZEND_SIGNED_MULTIPLY_LONG(a, b, lval, dval, usedval) do {	\
-	zend_long64 __result = (zend_long64) (a) * (zend_long64) (b);	\
+	int64_t __result = (int64_t) (a) * (int64_t) (b);				\
 	if (__result > ZEND_LONG_MAX || __result < ZEND_LONG_MIN) {		\
 		(dval) = (double) __result;									\
 		(usedval) = 1;												\
@@ -206,13 +206,13 @@ static zend_always_inline size_t zend_safe_address(size_t nmemb, size_t size, si
 	return res;
 }
 
-#elif SIZEOF_SIZE_T == 4 && defined(HAVE_ZEND_LONG64)
+#elif SIZEOF_SIZE_T == 4
 
 static zend_always_inline size_t zend_safe_address(size_t nmemb, size_t size, size_t offset, int *overflow)
 {
-	zend_ulong64 res = (zend_ulong64)nmemb * (zend_ulong64)size + (zend_ulong64)offset;
+	uint64_t res = (uint64_t) nmemb * (uint64_t) size + (uint64_t) offset;
 
-	if (UNEXPECTED(res > (zend_ulong64)0xFFFFFFFFL)) {
+	if (UNEXPECTED(res > UINT64_C(0xFFFFFFFF))) {
 		*overflow = 1;
 		return 0;
 	}

Zend/zend_types.h

@@ -64,20 +64,6 @@ typedef enum {
 # endif
 #endif
 
-#define HAVE_ZEND_LONG64
-#ifdef ZEND_WIN32
-typedef __int64 zend_long64;
-typedef unsigned __int64 zend_ulong64;
-#elif SIZEOF_LONG_LONG_INT == 8
-typedef long long int zend_long64;
-typedef unsigned long long int zend_ulong64;
-#elif SIZEOF_LONG_LONG == 8
-typedef long long zend_long64;
-typedef unsigned long long zend_ulong64;
-#else
-# undef HAVE_ZEND_LONG64
-#endif
-
 /* XXX this won't work on X32 platform */
 #ifdef ZEND_ENABLE_ZVAL_LONG64
 typedef int64_t zend_intptr_t;