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      Remove outdated ext/spl/examples items from .gitignore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, 12 insertions, 7 deletions

diff --git a/Zend/zend_object_handlers.c b/Zend/zend_object_handlers.c
index 21e47bc164..48549dfb99 100644
--- a/Zend/zend_object_handlers.c
+++ b/Zend/zend_object_handlers.c
@@ -1139,6 +1139,10 @@ ZEND_API zend_function *zend_get_call_trampoline_func(zend_class_entry *ce, zend
 	size_t mname_len;
 	zend_op_array *func;
 	zend_function *fbc = is_static ? ce->__callstatic : ce->__call;
+	/* We use non-NULL value to avoid useless run_time_cache allocation.
+	 * The low bit must be zero, to not be interpreted as a MAP_PTR offset.
+	 */
+	static const void *dummy = (void*)(intptr_t)2;
 
 	ZEND_ASSERT(fbc);
 
@@ -1157,7 +1161,7 @@ ZEND_API zend_function *zend_get_call_trampoline_func(zend_class_entry *ce, zend
 		func->fn_flags |= ZEND_ACC_STATIC;
 	}
 	func->opcodes = &EG(call_trampoline_op);
-	func->run_time_cache = (void*)(intptr_t)-1;
+	ZEND_MAP_PTR_INIT(func->run_time_cache, (void***)&dummy);
 	func->scope = fbc->common.scope;
 	/* reserve space for arguments, local and temorary variables */
 	func->T = (fbc->type == ZEND_USER_FUNCTION)? MAX(fbc->op_array.last_var + fbc->op_array.T, 2) : 2;
@@ -1352,11 +1356,7 @@ static void zend_intenal_class_init_statics(zend_class_entry *class_type) /* {{{
 			zend_intenal_class_init_statics(class_type->parent);
 		}
 
-#if ZTS
-		CG(static_members_table)[class_type->static_members_table_idx] = emalloc(sizeof(zval) * class_type->default_static_members_count);
-#else
-		class_type->static_members_table = emalloc(sizeof(zval) * class_type->default_static_members_count);
-#endif
+		ZEND_MAP_PTR_SET(class_type->static_members_table, emalloc(sizeof(zval) * class_type->default_static_members_count));
 		for (i = 0; i < class_type->default_static_members_count; i++) {
 			p = &class_type->default_static_members_table[i];
 			if (Z_TYPE_P(p) == IS_INDIRECT) {
@@ -1370,6 +1370,11 @@ static void zend_intenal_class_init_statics(zend_class_entry *class_type) /* {{{
 	}
 } /* }}} */
 
+ZEND_API void zend_class_init_statics(zend_class_entry *class_type) /* {{{ */
+{
+	zend_intenal_class_init_statics(class_type);
+} /* }}} */
+
 ZEND_API zval *zend_std_get_static_property(zend_class_entry *ce, zend_string *property_name, zend_bool silent) /* {{{ */
 {
 	zend_property_info *property_info = zend_hash_find_ptr(&ce->properties_info, property_name);
@@ -1409,7 +1414,7 @@ ZEND_API zval *zend_std_get_static_property(zend_class_entry *ce, zend_string *p
 
 	/* check if static properties were destroyed */
 	if (UNEXPECTED(CE_STATIC_MEMBERS(ce) == NULL)) {
-		if (ce->type == ZEND_INTERNAL_CLASS) {
+		if (ce->type == ZEND_INTERNAL_CLASS || (ce->ce_flags & ZEND_ACC_IMMUTABLE)) {
 			zend_intenal_class_init_statics(ce);
 		} else {
 undeclared_property: