Removed some redundant files
Don't bother running GC as it doesn't seem to get as much memory back anyway plus the run_gc! method in the fastcgi dispatcher is a disaster as it disables GC completely except for when it is forced by making a call to the run_gc! method.
Tidy up.
Run GC if we hit the memory limit, and only restart if we are still too big.
Increase the hard memory limit and set a lower soft limit that does a clean restart between requests.
Do a GC run every 10 requests.
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