Batch I/O requests, saves about 10ms.
Stop aliasing arguments.
Remove assert statements that appear as "release || assert(...)".
Update build script and move it to the extension directory.
Fix function name checking under the presence of a JS minifier.
Rename references to |struct| since it's a reserved word in LLJS which is used by the build phase.
Don't replace identifiers that appear in variable declarations.
Rename rtstack.
Package all source files into one and do some simple AST folding.
Don't rely on update-flash-refs for the extension build system.
Fix error that the closure compiler complains about.
Add closure to Shumway utils.