When packaging, handle symlinks by zipping the full target file instead of just the path to the symlink target.

[Identifier]

I know symlinks are tricky to use successfully, and even Git has problems with them sometimes on Windows, but they're very convenient when working with multiple mods. Unfortunately, currently when packaging a mod with symlinked files in it, the file's contents in the .zip package simply contain the relative path to the target file, instead of containing the content of the actual target file. It would be nice if your package zipping could copy the full target file into the packaged zip file during the package process.