Update http->https in license (#6945)

1. Update: http://www.php.net/license/3_01.txt to https, as there is anyway server header "Location:" to https.
2. Update few license 3.0 to 3.01 as

Update http->https in license (#6945)

1. Update: http://www.php.net/license/3_01.txt to https, as there is anyway server header "Location:" to https.
2. Update few license 3.0 to 3.01 as 3.0 states "php 5.1.1, 4.1.1, and earlier".
3. In some license comments is "at through the world-wide-web" while most is without "at", so deleted.
4. fixed indentation in some files before |

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Inline pair production in json parser

Having this as a separate production has a noticeable performance
impact, and doesn't really make things clearer either.

Voidify some ZEND_API functions

Closes GH-5805

Constify char * arguments of APIs

Closes GH-5676.

Clean up the generation of the parsers

Prefer '%define api.value.type' to '#define YYSTYPE', so that Bison
know the type.

Use '%code requires' to declare what is needed to defin

Clean up the generation of the parsers

Prefer '%define api.value.type' to '#define YYSTYPE', so that Bison
know the type.

Use '%code requires' to declare what is needed to define the api.value.type
(that code is output in the generated header before the generated
definition of YYSTYPE).

Prefer '%define api.prefix' inside the grammar file to '-p' outside,
as anyway the functions defined in the file actually use this prefix.

Prefer `%param` to both `%parse-param` and `%lex-param`.

Closes GH-5138

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Use "%empty" in the parsers, instead of comments

The annotation %empty is properly enforced: warnings when it's
missing, and errors when it's inappropriate. Support for %empty was
i

Use "%empty" in the parsers, instead of comments

The annotation %empty is properly enforced: warnings when it's
missing, and errors when it's inappropriate. Support for %empty was
introduced in Bison 3.0.

Pass -Wempty-rule to Bison.

Closes GH-5134

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Optimize creation of empty arrays in json_decode

Use the shared empty array from ZVAL_EMPTY_ARRAY

For code that created an 10 arrays of 100000 empty arrays
(has the same result

Optimize creation of empty arrays in json_decode

Use the shared empty array from ZVAL_EMPTY_ARRAY

For code that created an 10 arrays of 100000 empty arrays
(has the same result with `$assoc=true` and `{}`)

- This is the worst-case comparison, but I'd expect 0-length arrays to be fairly
common in regular data for json_decode
- The parser implementation was using function pointers so that third party
extension developers could reuse the json parser for their own
data structures, etc. (I think).

This PR is meant to let those third party extensions continue working
without changes.

Before this patch: In 0.126 seconds: added 97.99 MiB
After this patch: In 0.096 seconds: added 41.99 MiB

```php
<?php
$json = '[' . str_repeat('[],', 100000) . "null]";
$start_memory = memory_get_usage();
$start_time = microtime(true);
$result = [];
for ($i = 0; $i < 10; $i++) {
$result[] = json_decode($json);
}
$end_memory = memory_get_usage();
$end_time = microtime(true);
// Before this patch: In 0.126 seconds: added 97.99 MiB
// After this patch: In 0.096 seconds: added 41.99 MiB
printf("In %.3f seconds: added %.2f MiB\n", $end_time - $start_time, ($end_memory - $start_memory)/1000000);

// For objects
$json = '[' . str_repeat('{},', 100000) . "null]";
$start_memory = memory_get_usage();
$start_time = microtime(true);
for ($i = 0; $i < 10; $i++) {
$result[] = json_decode($json, true);
}
$end_memory = memory_get_usage();
$end_time = microtime(true);
// Before this patch: In 0.126 seconds: added 97.99 MiB
// After this patch: In 0.096 seconds: added 41.99 MiB
printf("In %.3f seconds: added %.2f MiB (objects decoded as arrays) \n", $end_time - $start_time, ($end_memory - $start_memory)/1000000);
```

Closes GH-4861.

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Remove mention of PHP major version in Copyright headers

Closes GH-4732.

Clean up JSON parser

Don't use <value> type for JSON tokens that don't have a value
and remove the errlex productions -- we're going to get an
unexpected token error anyway, there's

Clean up JSON parser

Don't use <value> type for JSON tokens that don't have a value
and remove the errlex productions -- we're going to get an
unexpected token error anyway, there's no need to handle these
explicitly.

This also removes the awkward workarounds for the unused value
warnings.

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Use %define api.pure instead of %pure-parser

%pure-parser is deprecated. In our case there is no difference between
true & full, as we don't use locations.

Upgrade deprecated directives and use non-posix bison

With Bison 3.0 some directives are deprecated:
- %name-prefix "x" should be %define api.prefix {x}
- %error-verbose should be %d

Upgrade deprecated directives and use non-posix bison

With Bison 3.0 some directives are deprecated:
- %name-prefix "x" should be %define api.prefix {x}
- %error-verbose should be %define parse.error verbose

Bison 3.3 also started emiting more warnings and since PHP souce parsers
are not POSIX compliant this patch fixes this as pointed out via
495a46aa1dc564656bf919cb49aae48a31ae15f4.

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Refactor zend_object_handlers API to pass zend_object* and zend_string* insted of zval(s).

Remove yearly range from copyright notice

Remove year range from copyright notice

Use zval_ptr_dtor_nogc() in JSON parser (it can't produce circular data structures)

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

year++

year++

year++

RC manipulation cleanup 2

Sync json parser defs

Update copyright headers to 2017

Update copyright headers to 2017

Update copyright headers to 2017

Use empty keys instead of _empty_ in json decoding