Description:
------------
Hello,

The function php_stream_url_wrap_http_ex() in file ext/standard/http_fopen_wrapper.c
checks the presence of the "Transfer-Encoding: chunked" HTTP header to detect if
the filter has to be used.

However, the HTTP RFC allows multiple spaces after the ':'.

This patch adds the supports of this case.

This patch also updates the Location, Content-Type and Content-Length processing
which suffers the same bug. I've created two generic functions easier to use.

Thank you.