Merge branch 'PHP-7.3' into PHP-7.4

diff --cc Zend/zend_alloc.c
index 139fb694e79fff922f6ee279e1ea3cd583ae8617,11f5b46bd9559bccf0e61e96b41529be19f200e8..f0ceb4dd35bd59775a8ba9b1d36c8a9f235b487e
--- 1/Zend/zend_alloc.c
--- 2/Zend/zend_alloc.c
+++ b/Zend/zend_alloc.c
@@@ -190,12 -191,10 +190,10 @@@ typedef struct  _zend_mm_free_slot zend
  typedef struct  _zend_mm_chunk     zend_mm_chunk;
  typedef struct  _zend_mm_huge_list zend_mm_huge_list;
  
- #ifdef MAP_HUGETLB
  int zend_mm_use_huge_pages = 0;
- #endif
  
  /*
 - * Memory is retrived from OS by chunks of fixed size 2MB.
 + * Memory is retrieved from OS by chunks of fixed size 2MB.
   * Inside chunk it's managed by pages of fixed size 4096B.
   * So each chunk consists from 512 pages.
   * The first page of each chunk is reseved for chunk header.