The $Id$ keywords were used in Subversion where they can be substituted
with filename, last revision number change, last changed date, and last
user who changed it.
In Git this functionality is different and can be done with Git attribute
ident. These need to be defined manually for each file in the
.gitattributes file and are afterwards replaced with 40-character
hexadecimal blob object name which is based only on the particular file
contents.
This patch simplifies handling of $Id$ keywords by removing them since
they are not used anymore.
As fcgi_request is an opaque struct as of PHP 7, expose a new API
function fcgi_end() which does fcgi_flush() with end=1 and checks/
sets the ->ended flag.
"closed" refers to whether FCGI_END_REQUEST has been sent, while
the "close" operation does something entirely different. It gets
extra confusing when fcgi_is_closed() does not actually return
fcgi_request.closed...
Previously fcgi_request defined in main/fastcgi.h might be treated differently in different files, because of different behavior of #ifdef TCP_NODELAY. This leaded to stack memory corruption and unpredictable crashes.
