Copy user permissions to group and other in bin/*

Necessary for packages so that the libraries/deps files are readable,
even when owned by root (because it was installed from a package).

build.sh

@@ -23,3 +23,6 @@ popd
 
 # Publish PowerShell to bin, with LINUX defined through a configuration
 dotnet publish --output "$BIN" --configuration Linux src/Microsoft.PowerShell.Linux.Host
+
+# Fix permissions for packaging
+chmod -R go=u "$BIN"