Fix #73927: phpdbg fails with windows error prompt at "watch array"

We expect zvals, so we should request zvals.

We also suppress spurious watchpoint removal notices.

Fix several mostly Windows related phpdbg bugs

* Properly initialize PHPDBG_G(watch_tmp)

Otherwise that may cause segfaults in ZTS builds.

* Deactivate potentially remain

Fix several mostly Windows related phpdbg bugs

* Properly initialize PHPDBG_G(watch_tmp)

Otherwise that may cause segfaults in ZTS builds.

* Deactivate potentially remaining watchpoints after REPL

Otherwise the memory could still be protected, resulting in segfaults
during shutdown.

* NULL zend_handlers_table after freeing

As of commit 4130fe4[1], the `zend_handlers_table` is explicitly
freed in the `zend_vm_dtor()`. Since phpdbg (and maybe some other
SAPIs) may restart the engine afterwards, we have to make sure that
the table is also NULLed.

* Only set context option if there is a context

In other words, we must not follow the null pointer.

* Cater to file handles without attached console

File handles do not necessarily have an attached console (for
instance, pipes do not), in which case `GetConsoleScreenBufferInfo()`
fails. In this case we set a default value (`40`) for lines like on
other systems.

[1] <http://git.php.net/?p=php-src.git;a=commit;h=4130fe437a5db7ead1444d3748bd0fbad9829cb2>

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Don't use zmm for PHPDBG_G(exec)

Uses system allocator when backing up settings ... let's avoid
unnecessary confusion.

Fix potentially uninitialized warnings in phpdbg

Remove yearly range from copyright notice

Introduce get_properties_for() handler

This handler allows getting the object properties for a particular
purpose, such as array casting, serialization, etc.

Change zend_lookup_class_ex() and zend_fetch_class_by_name() prototypes to accept optional lower-case class name as zend_string*, instead of zval*.

Changed php_add[c]slashes prototypes (removed should_free argument)

Moved "zval.u2.cache_slot" into free room of "zend_op"

Changed CATCH instruction format (extended_value moved into op2, op2 into result, result into extended_value)

year++

year++

year++

Always use IS_CONSTANT_AST (IS_CONSTANT is removed).

Refactored recursion pretection

Changed the way VM accesses constant operands in 64-bit builds.

Update copyright headers to 2017

Update copyright headers to 2017

Update copyright headers to 2017

Properly escape all filenames when exporting breakpoints

Fix searching for catch blocks
Since PHP-7.1 catch blocks are addressed with relative byte difference between two catch blocks as opposed to absolute opcode number

Rewrite watchpoints to be much more stable

This mainly involves a separate abstraction layer for elements (e.g. $a->b) and watchpoints (on pointer of the Bucket for example).
Also better

Rewrite watchpoints to be much more stable

This mainly involves a separate abstraction layer for elements (e.g. $a->b) and watchpoints (on pointer of the Bucket for example).
Also better comparison handling (value backup vs. page dumps).

It is not yet finished (there are sometimes false positives announced and names not yet perfect), but the functionality is working and not crashing as far as I have tested.
Future scope is also relative watchpoints, e.g. "w $this->val expression()" which does not have the symbol tables as basis, but the value (in this example: return value of expression()) as basis.

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Print .0 in phpdbg opcode dumps

Fix bug #71575 removing extra semicolons outside macros

Format string fixes

Conflicts:
ext/pgsql/pgsql.c