Description:
------------
i tested the revision 298795 of php-fpm and i experienced that the config value of 
min_spare_servers always gets copied into the config value of max_spare_servers, 
which then means that start_servers will also have to be equal to this,

Test script:
---------------
; Sets the number of server processes created on startup.
; Used only with 'dynamic' pm.style
; default : min_spare + (max_spare - min_spare) / 2
;
pm.start_servers = 50

; Sets the desired minimum number of idle server processes.
; Used only with 'dynamic' pm.style
; It's mandatory when pm is set to dynamic
;
pm.min_spare_servers = 10
; Sets the desired maximum number of idle server processes.
; Used only with 'dynamic' pm.style
; It's mandatory when pm is set to dynamic
;
pm.max_spare_servers = 100


Expected result:
----------------
should be able to start php-fpm server

Actual result:
--------------
the result is that on start of php-fpm server, the fpm gives out a config error if 
you use the above pasted configuration