Description:
------------
FPM should allow multiple include directives per file. Looking at the code I see no real reason this is prohibited. The attached patch should fix this limitation and makes the code more sane (imho).

Additional I've fixed the wrong line numbers printed in case of nested includes. They are always the same.

I can also create a pull request on GitHub if that's preferred.

Test script:
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This is a simple test for the wrong line numbers *only*:
# cat fpm.d/test.conf
[test]
include = etc/fpm.d/vhost.tmpl

# cat etc/fpm.d/vhost.tmpl
prefix = /var/www/$pool
user = $pool
pm = ondemand
unknown_directive=foo

Expected result:
----------------
[15-Sep-2014 21:36:49] ERROR: [etc/fpm.d/vhost.tmpl:4] unknown entry 'unknown_directive'
[15-Sep-2014 21:36:49] ERROR: Unable to include etc/fpm.d/vhost.tmpl from etc/fpm.d/test.conf at line 2
[15-Sep-2014 21:36:49] ERROR: Unable to include etc/fpm.d/test.conf from etc/php-fpm.conf at line 15
[15-Sep-2014 21:36:49] ERROR: failed to load configuration file 'etc/php-fpm.conf'
[15-Sep-2014 21:36:49] ERROR: FPM initialization failed

Actual result:
--------------
[15-Sep-2014 21:36:21] ERROR: [etc/fpm.d/vhost.tmpl:4] unknown entry 'unknown_directive'
[15-Sep-2014 21:36:21] ERROR: Unable to include etc/fpm.d/vhost.tmpl from etc/fpm.d/test.conf at line 4
[15-Sep-2014 21:36:21] ERROR: Unable to include etc/fpm.d/test.conf from etc/php-fpm.conf at line 4
[15-Sep-2014 21:36:21] ERROR: failed to load configuration file 'etc/php-fpm.conf'
[15-Sep-2014 21:36:21] ERROR: FPM initialization failed