Add support for getting SKIP_TAGSTART and SKIP_WHITE options

When `XML_OPTION_SKIP_TAGSTART` and `XML_OPTION_SKIP_WHITE` had been
introduced[1], it had been overlooked to also support th

Add support for getting SKIP_TAGSTART and SKIP_WHITE options

When `XML_OPTION_SKIP_TAGSTART` and `XML_OPTION_SKIP_WHITE` had been
introduced[1], it had been overlooked to also support them for
`xml_parser_get_option()`. We catch up on that.

[1] <http://git.php.net/?p=php-src.git;a=commit;h=b57dc275950b228f2399990471c4f22b7d154c6c>

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Trim trailing whitespace in source code files

Trim trailing whitespace in source code files

Merge branch 'PHP-7.3'

* PHP-7.3:
Fix #30875: xml_parse_into_struct() does not resolve entities

Merge branch 'PHP-7.2' into PHP-7.3

* PHP-7.2:
Fix #30875: xml_parse_into_struct() does not resolve entities

Merge branch 'PHP-7.1' into PHP-7.2

* PHP-7.1:
Fix #30875: xml_parse_into_struct() does not resolve entities

Fix #30875: xml_parse_into_struct() does not resolve entities

Setting up an empty default handler is not only useless, but actually
harmful, since internal entity-references are not reso

Fix #30875: xml_parse_into_struct() does not resolve entities

Setting up an empty default handler is not only useless, but actually
harmful, since internal entity-references are not resolved anymore.
From the libexpat docs[1]:

| Setting the handler with this call has the side effect of
| turning off expansion of references to internally defined general
| entities. Instead these references are passed to the default
| handler.

[1] <https://www.xml.com/pub/1999/09/expat/reference.html#setdefhandler>

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Remove PHP_XML_INTERNAL defines

This macro is no longer used.

Remove IS_EXT_MODULE defines

I'm not sure what this was used for, but it doesn't look to be
relevant anymore.

Make ext/xml API private

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

Reduce variable scope

Trailing whitespaces

Signed-off-by: Gabriel Caruso <carusogabriel34@gmail.com>

year++

year++

year++

Move constants into read-only data segment

Move constants into read-only data segment

Cleanup type conversion

Kill compiler warnings in ext/xml

Update copyright headers to 2017

Update copyright headers to 2017

Merge branch 'PHP-7.1'

* PHP-7.1:
remove TSRMLS_*

Merge branch 'PHP-7.0' into PHP-7.1

* PHP-7.0:
remove TSRMLS_*