Fix #77141: Signedness issue in SOAP when precision=-1

According to php_gcvt(), we assume at most 17 fractional digits for
negative precision.

Future-proof email addresses

Future-proof email addresses...

Merge branch 'PHP-7.3'

Merge branch 'PHP-7.2' into PHP-7.3

Fixed bug #50675

SOAP: Stop overwriting the node name when creating an XML node
for an object reference.

Removed unused function

Use Zend API helper functions

Remove unused Git attributes ident

The $Id$ keywords were used in Subversion where they can be substituted
with filename, last revision number change, last changed date, and last
use

Remove unused Git attributes ident

The $Id$ keywords were used in Subversion where they can be substituted
with filename, last revision number change, last changed date, and last
user who changed it.

In Git this functionality is different and can be done with Git attribute
ident. These need to be defined manually for each file in the
.gitattributes file and are afterwards replaced with 40-character
hexadecimal blob object name which is based only on the particular file
contents.

This patch simplifies handling of $Id$ keywords by removing them since
they are not used anymore.

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It's safer to use zval_ptr_dtor() for iterator keys.

Replace zval_dtor() with specialized destructors

Use zend_string_release_ex() instread of zend_string_release() in places, where we sure about string persistence.

year++

year++

year++

Merge branch 'PHP-7.2'

* PHP-7.2:
Fixed reference-counting

Merge branch 'PHP-7.1' into PHP-7.2

* PHP-7.1:
Fixed reference-counting

Fixed reference-counting

Move constants into read-only data segment

Avoid unnecessary reference-counting on strings.

RC manipulation cleanup

Always use IS_CONSTANT_AST (IS_CONSTANT is removed).

Refactored recursion pretection

Drop soap_hash_str_find_deref()

And directly use zend_hash_str_find_deref() instead.

Update copyright headers to 2017