Fixed memory leak

- moved STR2STR, BOOL2STR and PM2STR from fpm_conf.h to fpm_conf.c (Giovanni Giacobbi)

- Implemented FR #54172 (Overriding the pid file location of php-fpm)

- Replaced shm_slots with a real scoreboard
- Added several improvements to the status page

- Added custom access log (also added per request %CPU and memory mesurement)

Added master rlimit_files and rlimit_core in the global configuration settings

- Fixed bug #53527 (php-fpm --test doesn't set a valuable return value).

- Fixed bug #53412 (segfault when using -y)

- extend the 'i-t' fpm argument to dump configuration file when called twice (-tt)

- Fixed #52691 (allow multiple instance of FPM using a custom prefix)

- Fixed #52660 (custom process title for FPM)

- Fixed #52692 (Added '-t/--test' to php-fpm to check and validate FPM conf file)

- get rid of ZLOG_STUFF code redundancy

- add "listen queue len" stat (thx to Andrei Nigmatulin)

- syntax and minor optimizations

- remove a memory leak (missing efree())

- add 'max children reached' to the FPM status page. It shows how many times
a pool has reached the max_children parameter.

- Changed listen.backlog in the FPM configuration file to default to 128
instead of -1 (except on FreeBSD and OpenBSD). This is the same value
as the one used in the cgi sapi. This patch

- Changed listen.backlog in the FPM configuration file to default to 128
instead of -1 (except on FreeBSD and OpenBSD). This is the same value
as the one used in the cgi sapi. This patch completes revision 302725.

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- typo (thx to sixd)

Fix #52609 (INI scanner did not use ZEND_INI_SCANNER_NORMAL)

BUG: all value comparaisons were not case insensitive in the conf file parser

fix typos and use correct directive names in error messages

- Fixed bug #52086 (No new line at the end of a included file crahes the PHP FPM daemon)

Fix #52067, chroot and chdir path were not checked at startup. If configured with unexistant directories, FPM entered in an error loop.

support both 'warn' and 'warning' as error levels