Ignore null error messages.
"kpm pack" generates web.config
Add web.config generation to functional tests
Make sure "/?" doesn't take over control in top level scripts
Revert "/?" option fix
Prefetch metadata to avoid locking files for metadate references.
Return non-zero exit code if no subcommand/option was specified
Show paths of corrupt cache files during restoring
Suppress CS1705
Update System.Reflection.Metadata dependency
Updated package names in the build script
"kpm build" shows detailed dependency information by default

- Make output format of "kpm pack" consistent with "kpm build"
- Use assembly paths from metadata references
- Add "Building {project} for {framework}"
- Reuse exports produced by LibraryManager