The flag STREAM_REPORT_ERRORS is never sent to the StreamWrapper

[GromNaN]

As I understand it, since php/php-src#6190, the flag STREAM_REPORT_ERRORS is never sent to the StreamWrapper instances.

The documentation should be updated, as it is not necessary to have code that handle this flag.

doc-en/reference/stream/streamwrapper/stream-open.xml

Lines 79 to 84 in 21191d3

	<entry><constant>STREAM_REPORT_ERRORS</constant></entry>
	<entry>If this flag is set, you are responsible for raising
	errors using <function>trigger_error</function> during
	opening of the stream. If this flag is not set, you
	should not raise any errors.
	</entry>

doc-en/reference/stream/constants.xml

Lines 80 to 85 in 21191d3

	<entry><constant>STREAM_REPORT_ERRORS</constant></entry>
	<entry><literal>Flag</literal> indicating if the <literal>wrapper</literal>
	is responsible for raising errors using <function>trigger_error</function>
	during opening of the stream. If this flag is not set, you
	should not raise any errors.
	</entry>

What should be the best practice when implementing a StreamWrapper, in case of error? Returning false silently, trigger a E_USER_ERROR or throwing an exception?

[Girgias]

@bukka could you have a look at this?