[bind10-dev] recent performance improvements

[Jeremy C. Reed]

I mistakenly did the math wrong for improvements (but not regressions).

This is master of Friday versus master of March 1:

root-memory-.success 19102.104800 qps 219% improvement
root-memory-.soa 19025.823065 qps 206% improvement
root-memory-cpus4.success 54319.332055 qps 150% improvement
root-memory-cpus4.soa 54122.582020 qps 136% improvement
largehost-memory-.success 22766.093055 qps 39% improvement
largehost-memory-cpus4.soa 22851.957160 qps 38% improvement
largehost-memory-.soa 22551.186910 qps 36% improvement
largehost-memory-cpus4.success 22866.657477 qps 34% improvement
smallzone-memory-.success 30725.390836 qps 23% improvement
smallzone-memory-.soa 28879.885552 qps 21% improvement
largehost-memory-.nxdomain 25848.385365 qps 14% improvement
largehost-memory-cpus4.nxdomain 25895.384717 qps 14% improvement
smallzone-memory-.nxdomain 30719.644537 qps 11% improvement
smallzone-sqlite3-.soa 7261.990934 qps 9% improvement
builtin--.success 25657.951995 qps 8% improvement
smallzone-sqlite3-nocache.success 3241.225610 qps 4% improvement
root-sqlite3-nocache.success 444.733171 qps 4% improvement
root-memory-.nxdomain 29075.203829 qps 4% improvement
smallzone-sqlite3-nocache.soa 3018.559043 qps 3% improvement
root-sqlite3-.success 443.628090 qps 3% improvement
builtin--.nxdomain 3599.940615 qps 3% improvement
root-sqlite3-.soa 404.176297 qps 2% improvement
largehost-sqlite3-.success 1607.984053 qps 2% improvement
largehost-sqlite3-.soa 1683.954836 qps 1% improvement
largehost-sqlite3-cpus4.soa 6277.680175 qps 1% improvement
largehost-sqlite3-.nxdomain 0.008076 qps 0% improvement