Requesting the addition of a force sync flag/option for Sync Only in p4sync.

There already is an option to force sync a workspace, but currently it does require a full workspace wipe before it does sync. There are certain situations where you do not want to clean workspace before force syncing it - for an example:

• when you have locally generated logs that you don't want to delete,
• when you simply don't care about additional files that might have been added locally.