computeLinkerVariableStrinsg had an unusedargument.
Only skip obfuscating the name "FS" in the "embed" package.
The reflect methods no longer use the transformer receiver type,
so that TODO now feels unnecessary. Many methods need to be aware
of what the current types.Package is, and that seems reasonable.
We no longer use writeFileExclusive for our own cache on disk,
so the TODO about using locking or atomic writes is no longer relevant.