RFR: Cleaning up human-readable output

[Aleksey Shipilev]

Hi,

The human-readable output seems to be overloaded with the info. Let's
prune it! I have the change which transforms the output like this:

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# Runtime (per iteration): 100ms
# Iterations: 5
# Thread count: 1
# Threads will synchronize iterations
# Benchmark mode: Throughput, ops/time
# Running: org.openjdk.jmh.samples.JMHSample_01_HelloWorld.hello
# Warmup Iteration   1 (100ms in 1 thread): 0.634 ops/nsec
# Warmup Iteration   2 (100ms in 1 thread): 0.743 ops/nsec
# Warmup Iteration   3 (100ms in 1 thread): 0.844 ops/nsec
# Warmup Iteration   4 (100ms in 1 thread): 0.841 ops/nsec
# Warmup Iteration   5 (100ms in 1 thread): 0.843 ops/nsec
Iteration   1 (100ms in 1 thread): 0.831 ops/nsec
Iteration   2 (100ms in 1 thread): 0.810 ops/nsec
Iteration   3 (100ms in 1 thread): 0.923 ops/nsec
Iteration   4 (100ms in 1 thread): 0.830 ops/nsec
Iteration   5 (100ms in 1 thread): 0.830 ops/nsec

Run result "***": 0.845 ±(95%) 0.056 ±(99%) 0.093 ops/nsec
Run statistics "***": min = 0.810, avg = 0.845, max = 0.923, stdev = 0.045
Run confidence intervals "***": 95% [0.789, 0.900], 99% [0.752, 0.937]

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...into this...

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# Fork: 9 of 10
# Running: org.openjdk.jmh.samples.JMHSample_01_HelloWorld.hello
# Warmup: 5 iterations, 100 ms each
# Measurement: 5 iterations, 100 ms each
# Threads: 1 thread, will synchronize iterations
# Benchmark mode: Throughput, ops/time
# Warmup Iteration   1: 0.089 ops/nsec
# Warmup Iteration   2: 1.857 ops/nsec
# Warmup Iteration   3: 1.959 ops/nsec
# Warmup Iteration   4: 1.964 ops/nsec
# Warmup Iteration   5: 1.953 ops/nsec
Iteration   1: 1.964 ops/nsec
Iteration   2: 1.964 ops/nsec
Iteration   3: 1.964 ops/nsec
Iteration   4: 1.968 ops/nsec
Iteration   5: 1.971 ops/nsec

Result: 1.966 ±(95%) 0.004 ±(99%) 0.006 ops/nsec
  Statistics: (min, avg, max) = (1.964, 1.966, 1.971), stdev = 0.003
  Confidence intervals: 95% [1.962, 1.970], 99% [1.960, 1.972]

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Any objections for the change?

-Aleksey.