Include the source location in Closure names (#13550)

* Include the source location in Closure names

This change makes stack traces involving Closures, especially multiple
diffe

Include the source location in Closure names (#13550)

* Include the source location in Closure names

This change makes stack traces involving Closures, especially multiple
different Closures, much more useful, because it's more easily visible *which*
closure was called for a given stack frame.

The implementation is similar to that of anonymous classes which already
include the file name and line number within their generated classname.

* Update scripts/dev/bless_tests.php for closure naming

* Adjust existing tests for closure naming

* Adjust tests for closure naming that were not caught locally

* Drop the namespace from closure names

This is redundant with the included filename.

* Include filename and line number as separate keys in Closure debug info

* Fix test

* Fix test

* Include the surrounding class and function name in closure names

* Fix test

* Relax test expecations

* Fix tests after merge

* NEWS / UPGRADING

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Prevent dtor of generator in suspended fiber (#10462)

Generators that suspended a fiber should not be dtor because they will be
executed during the fiber dtor.

Fiber dtor throws

Prevent dtor of generator in suspended fiber (#10462)

Generators that suspended a fiber should not be dtor because they will be
executed during the fiber dtor.

Fiber dtor throws an exception in the fiber's context in order to unwind and
execute finally blocks, which will also properly dtor the generator.

Fixes GH-9916

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