shell with custom WrapFactory

[Tim Schaub]

I'm interested in providing a shell with a custom WrapFactory. I'm
using org.mozilla.javascript.tools.shell.Main right now, and it looks
like a fair amount of code to duplicate just to set a custom wrap
factory in the context. The Shell in the Rhino examples looks simpler
to duplicate, but I'm hoping someone suggest if there is a way to use
a custom WrapFactory without creating a new shell class.

Thanks for any tips,
Tim