An example of how to use Stencils

[dmitrikozlov]

The example shows how to use Stencils to avoid repetitive compilations of the same scripts. It addresses issue #63 and demonstrates API such as:

• RefPtr class, which represents reference-counted pointer, used for JS::Stencil
• JS::SourceText class, which holds the source text
• JS::CompileOptions class, which represents the options for compilation
• JS::CompileGlobalScriptToStencil function, which compiles given source text into JS::Stencil
• JS::InstantiateGlobalStencil function, which converts JS::Stencil into JSScript structure (JSScript is GC-structure that represents either top-level script or function script)

[dmitrikozlov]

I've completed the changes based on the feedback. Thanks.

[dmitrikozlov]

Do I need to do something else?

[arai-a]

no, I've asked for merge. Will be merged shortly.

[dmitrikozlov]

Thank you for your help!