- Detect all spellings of <file>, <file name> etc as well as <path>.
- Only complete directories for <dir>.
- Complete URLs for <URL>.
- Complete --request and --ftp-method.
Closes#8363
Reported by the new script 'scripts/copyright.pl'. The script has a
regex whitelist for the files that don't need copyright headers.
Removed three (mostly usesless) README files from docs/
Closes#5141