add bypass update tagsfile feature

[wcq062821]

I need to use the definition result returned by the function citre-get-definitions-maybe-update-tags-file to display the definition of the symbol at the cursor below the minibuffer. Often some symbols cannot be found in the tagsfile, and every time to choose very unfriendly

[AmaiKinono]

If I understand it right, you can use citre-get-definitions directly.

[wcq062821]

Ok, Thanks!