Introduce JsString, JsBoolean etc and support efficient string concatenation #463
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Abstraction seem to have brought some setback in speed, but allocations generally lower. dromaeo strings and SunSpider strings are pretty nice numbers. I guess we can do another round in optimizing if there are places to improve after this is OK.EDIT, I was able to return speed by using ReferenceEquals for Undefined and Null which doesn't incur performance penalty like == calling polymorfic Equals.
Esprima.Benchmark.DromaeoBenchmark
Esprima.Benchmark.SunSpiderBenchmark
Jint.Benchmark.ArrayBenchmark
Jint.Benchmark.ArrayStressBenchmark
Jint.Benchmark.EvaluationBenchmark
Jint.Benchmark.LinqJsBenchmark
Jint.Benchmark.MinimalScriptBenchmark
Jint.Benchmark.StringIndexingBenchmark
Jint.Benchmark.UncacheableExpressionsBenchmark