Immutable clases and op_arrays.

Squashed commit of the following:

commit cd0c36c3f943849e5b97a8dbe2dd029fbeab3df9
Merge: 4740dabb84 ad6738e886
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Oct 17 14:43:38 2018 +0300

    Merge branch 'master' into immutable

    * master:
      Remove the "auto" encoding
      Fixed bug #77025
      Add vtbls for EUC-TW encoding

commit 4740dabb843c6d4f7f866b4a2456073c9eaf4c77
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Oct 17 14:12:28 2018 +0300

    Reverted back ce->iterator_funcs_ptr. Initialize ce->iterator_funcs_ptr fields in immutable classes.

commit ad7a78b253be970db70c2251e66f9297d8e7f829
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Oct 17 11:46:30 2018 +0300

    Added comment

commit 0276ea51875bab37be01a4dc5e5a047c5698c571
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Oct 17 11:42:43 2018 +0300

    Added type cast

commit c63fc5d5f19c58498108d1698055b2b442227eb3
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Oct 17 11:36:51 2018 +0300

    Moved static class members initialization into the proper place.

commit b945548e9306b1826c881918858b5e5aa3eb3002
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Oct 17 11:21:03 2018 +0300

    Removed redundand assertion

commit d5a41088401814c829847db212488f8aae39bcd2
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Oct 17 11:19:13 2018 +0300

    Removed duplicate code

commit 8dadca8864e66de70a24bdf1181bcf7dd8fb27d7
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Oct 17 11:05:43 2018 +0300

    Hide offset encoding magic in ZEND_MAP_PTR_IS_OFFSET(), ZEND_MAP_PTR_OFFSET2PTR() and ZEND_MAP_PTR_PTR2OFFSET() macros.

commit 9ef07c88bd76801e2d4fbfeab3ebfd6e6a67ac5f
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Oct 17 10:48:29 2018 +0300

    typo

commit a06f0f3d3aba53e766046221ee44fb9720389ecc
Merge: 94099586ec 3412345ffe
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Oct 17 10:47:07 2018 +0300

    Merge branch 'master' into immutable

    * master:
      Remove unused variable makefile_am_files
      Classify object handlers are required/optional
      Add support for getting SKIP_TAGSTART and SKIP_WHITE options
      Remove some obsolete config_vars.mk occurrences
      Remove bsd_converted from .gitignore
      Remove configuration parser and scanners ignores
      Remove obsolete buildconf.stamp from .gitignore
      [ci skip] Add magicdata.patch exception to .gitignore
      Remove outdated ext/spl/examples items from .gitignore
      Remove unused test.inc in ext/iconv/tests

commit 94099586ec599117581ca01c15b1f6c5f749e23a
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Mon Oct 15 23:34:01 2018 +0300

    Immutable clases and op_arrays

1 files changed, 95 insertions, 0 deletions

diff --git a/Zend/zend_map_ptr.h b/Zend/zend_map_ptr.h
new file mode 100644
index 0000000000..88872ab1fe
--- /dev/null
+++ b/Zend/zend_map_ptr.h
@@ -0,0 +1,95 @@
+/*
+   +----------------------------------------------------------------------+
+   | Zend Engine                                                          |
+   +----------------------------------------------------------------------+
+   | Copyright (c) 1998-2018 Zend Technologies Ltd. (http://www.zend.com) |
+   +----------------------------------------------------------------------+
+   | This source file is subject to version 2.00 of the Zend license,     |
+   | that is bundled with this package in the file LICENSE, and is        |
+   | available through the world-wide-web at the following url:           |
+   | http://www.zend.com/license/2_00.txt.                                |
+   | If you did not receive a copy of the Zend license and are unable to  |
+   | obtain it through the world-wide-web, please send a note to          |
+   | license@zend.com so we can mail you a copy immediately.              |
+   +----------------------------------------------------------------------+
+   | Authors: Dmitry Stogov <dmitry@zend.com>                             |
+   +----------------------------------------------------------------------+
+*/
+
+#ifndef ZEND_MAP_PTR_H
+#define ZEND_MAP_PTR_H
+
+#include "zend_portability.h"
+
+#define ZEND_MAP_PTR_KIND_PTR           0
+#define ZEND_MAP_PTR_KIND_PTR_OR_OFFSET 1
+
+//#if defined(ZTS) || defined(TSRM_WIN32)
+# define ZEND_MAP_PTR_KIND ZEND_MAP_PTR_KIND_PTR_OR_OFFSET
+//#else
+//# define ZEND_MAP_PTR_KIND ZEND_MAP_PTR_KIND_PTR
+//#endif
+
+#if ZEND_MAP_PTR_KIND == ZEND_MAP_PTR_KIND_PTR
+# define ZEND_MAP_PTR(ptr) \
+	ptr ## __ptr
+# define ZEND_MAP_PTR_DEF(type, name) \
+	type * ZEND_MAP_PTR(name)
+# define ZEND_MAP_PTR_GET(ptr) \
+	(*(ZEND_MAP_PTR(ptr)))
+# define ZEND_MAP_PTR_SET(ptr, val) do { \
+		(*(ZEND_MAP_PTR(ptr))) = (val); \
+	} while (0)
+# define ZEND_MAP_PTR_INIT(ptr, val) do { \
+		ZEND_MAP_PTR(ptr) = (val); \
+	} while (0)
+# define ZEND_MAP_PTR_NEW(ptr) do { \
+		ZEND_MAP_PTR(ptr) = zend_map_ptr_new(); \
+	} while (0)
+#elif ZEND_MAP_PTR_KIND == ZEND_MAP_PTR_KIND_PTR_OR_OFFSET
+# define ZEND_MAP_PTR(ptr) \
+	ptr ## __ptr
+# define ZEND_MAP_PTR_DEF(type, name) \
+	type * ZEND_MAP_PTR(name)
+# define ZEND_MAP_PTR_IS_OFFSET(ptr) \
+	(((uintptr_t)ZEND_MAP_PTR(ptr)) & 1L)
+# define ZEND_MAP_PTR_OFFSET2PTR(ptr) \
+	((void**)((char*)CG(map_ptr_base) + (uintptr_t)ZEND_MAP_PTR(ptr) - 1))
+# define ZEND_MAP_PTR_PTR2OFFSET(ptr) \
+	((void*)((uintptr_t)(((char*)(ptr)) - ((char*)CG(map_ptr_base))) | 1L))
+# define ZEND_MAP_PTR_GET(ptr) \
+	(ZEND_MAP_PTR_IS_OFFSET(ptr) ? \
+		*(ZEND_MAP_PTR_OFFSET2PTR(ptr)) : \
+		(void*)(*(ZEND_MAP_PTR(ptr))))
+# define ZEND_MAP_PTR_SET(ptr, val) do { \
+		if (ZEND_MAP_PTR_IS_OFFSET(ptr)) { \
+			*(ZEND_MAP_PTR_OFFSET2PTR(ptr)) = (val); \
+		} else { \
+			*(ZEND_MAP_PTR(ptr)) = (val); \
+		} \
+	} while (0)
+# define ZEND_MAP_PTR_INIT(ptr, val) do { \
+		ZEND_MAP_PTR(ptr) = (val); \
+	} while (0)
+# define ZEND_MAP_PTR_NEW(ptr) do { \
+		ZEND_MAP_PTR(ptr) = zend_map_ptr_new(); \
+	} while (0)
+#else
+# error "Unknown ZEND_MAP_PTR_KIND"
+#endif
+
+ZEND_API void  zend_map_ptr_reset(void);
+ZEND_API void *zend_map_ptr_new(void);
+ZEND_API void  zend_map_ptr_extend(size_t last);
+
+#endif /* ZEND_MAP_PTR_H */
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * indent-tabs-mode: t
+ * End:
+ * vim600: sw=4 ts=4 fdm=marker
+ * vim<600: sw=4 ts=4
+ */