[FastCgi + Fpm] Fix a bug in the parsing of ondemand socks
[Test] Add safer config for testing
[Fpm] Add readme
[Shim] Fix bug in debug output
[Fpm] Reduce permission
[Fpm] Add permission information to doc
[FastCgi] Fix bug with big responses
[FastCgi] Fix out-of-one error in CompatArraySegment