Adjusting PHP-FPM and APC settings to more sane levels.

I have noticed quite a bit of site slowness, mostly due to the strange PHP-FPM configuration. This attempts to fix this.

The FPM configuration is mentally unstable and creates a lot of instances, and kills them after 200 requests, which can actually hurt performance, as EC2 micro instances have a weak CPU.

FYI: We use a static few-child configuration on the CPWN and it was stable. We switched to Apache temporarily, though.