New Workload: validatorjs regexp heavy workload

[camillobruni]

This runs the validatorjs test suite and stress-tests various regexp and some dynamic property lookups.

Given that we've lowered the priority of regex-dna by grouping the sunspider workloads, it might make sense to add another regexp workload again.

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[kmiller68]

Hmm, this seems like it spends about 1/4 to 1/3 of the time in utf8ToBytes, which seems higher than I'd like

[camillobruni]

Oops, I've profiled before including more tests that skewed the results massively.
I've commented out the IsBase64 test which also removes the need for providing a Buffer fallback in the webpack config.

[kmiller68]

Looks like the CLI versions are failing.

[camillobruni]

assertion conditions are hard :) flipped it the correct way now.

[kmiller68]

Hmm, I see some samples parsing the benchmark.js with utf-16 source. Can we escape the unicode there? Other options would be to split out the strings into a separate JSON but that seems like more work and makes the test itself harder to read.

[camillobruni]

• Added the UnicodeEscapePlugin
• Regenerated the sources
• Disallowed the 2-bytes sources in the benchmark definition

[kmiller68]

LGTM, @iainireland thoughts?

[iainireland]

I profiled this and poked around a little, and everything seems reasonable. LGTM.