Abort if earlygetopt fails to detect an option. Otherwise it could happen that a command is used on the wrong repository, because abbreviations of --cwd or --repository were ignored.

Simplified earlygetopt and made it remove parsed options and values. The order of aliases is no longer important, too.

Disallow short earlygetop option combined with other short options While "hg commit -qRfoo" can be read as "--quiet --repository foo", "hg commit -mRfoo" should be "--message Rfoo".