Fix SetHandler proxy:fcgi:// incompatibilities

Apache 2.4.10+ will allow the following:

```
<FilesMatch \.php$>
SetHandler proxy:fcgi://localhost:9000
</FilesMatch>
```

This is much easier than using `ProxyPassMatch` (which prevents rewriting and other stuff) and rewrites (which are a bag of hurt because when combined with user-land `.htaccess` rewrites, there's always rewrite loops, prefix breakage etc (I've tried, for weeks).

It's basically the future of using Apache (via `mod_proxy_fcgi`) together with PHP-FPM. It's also available for older versions as a standalone module, very easy to install: https://gist.github.com/progandy/6ed4eeea60f6277c3e39

However, the two bits of code this commit deletes interfere with that. They both cover CGI-only mode and were copied from that SAPI into the FPM source. See e.g. https://bugs.php.net/bug.php?id=47042

The first deleted part mangled `SCRIPT_NAME` if something like

```
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule (.*) index.php/$1 [L]
```

is used (i.e. rewriting to `PATH_INFO`. The second part drops `PATH_INFO` if there was a `REDIRECT_URL` (with CGI mode, `SCRIPT_FILENAME` in Apache is the path to the PHP binary, and `PATH_INFO` contains the name of the script to run).

Clearly, neither applies in the case of FPM, so both are safe to delete.
Add initial manual page for phpdbg.1
Merge branch 'master' of https://github.com/oerdnj/phpdbg into master
Rewritten author line and included instructions to make install the man page
Merge sapi/phpdbg into PHP-5.6
Merge branch 'PHP-5.6'
more extensive note on unserialize() change
Merge branch 'PHP-5.4' into PHP-5.5

* PHP-5.4:
  more extensive note on unserialize() change
more extensive note on unserialize() change
Merge branch 'PHP-5.5' into PHP-5.6

* PHP-5.5:
  more extensive note on unserialize() change
  more extensive note on unserialize() change
better explanation
update the date
Merge branch 'PHp-5.4' into PHP-5.5

* PHp-5.4:
  update the date
  better explanation
Merge branch 'PHP-5.5' into PHP-5.6

* PHP-5.5:
  update the date
  better explanation
Merge branch 'PHP-5.6'

* PHP-5.6:
  update the date
  better explanation
  more extensive note on unserialize() change
  more extensive note on unserialize() change
Fix Bug #67530 	error_log=syslog ignored

As for Bug #64915
Systemd use --nodaemonize but need to error_log to file or syslog to be honoured
Fix Bug #67531 	syslog cannot be set in pool configuration

error_log is listed in FPM_PHP_INI_TO_EXPAND,
but should not be expand when value = syslog
NEWS
Merge branch 'PHP-5.4' into PHP-5.5

* PHP-5.4:
  NEWS
  Fix Bug #67531 	syslog cannot be set in pool configuration
  Fix Bug #67530 	error_log=syslog ignored
NEWS
Merge branch 'PHP-5.5' into PHP-5.6

* PHP-5.5:
  NEWS
  NEWS
  Fix Bug #67531 	syslog cannot be set in pool configuration
  Fix Bug #67530 	error_log=syslog ignored