Fix typo: "informaiton" => "information"
Make _fileName readonly
Simplify ConvertTo8DigitHex
Fix spelling and whitespace
Cache the fallback lang-codepages
Cleanup ToString()

Use AppendLine and specify a larger capacity that is at least bigger
than the static strings.
Cleanup extraneous whitespace
Comment on the choice of the constant
Merge pull request #301 from justinvp/fileversioninfo_cleanup

FileVersionInfo Cleanup