Nail Mongrel2 version to v1.8.1
auto worker procs for lapis to allow scaling
Merge pull request #807 from torhve/lapisworkers

auto worker procs for lapis to allow scaling
Merge pull request #779 from idlewan/mongrel2_fix

Fix Mongrel2 version not to use 1.9.0
Merge branch 'master' of github.com:TechEmpower/FrameworkBenchmarks
Upgrade to latest netty release and use proper config for PooledByteBufAllocator