updated for version 7.4.416
Problem:    Problem with breakindent/showbreak and tabs.
Solution:   Handle tabs differently. (Christian Brabandt)
Added tag v7-4-416 for changeset 735bd597a8ff
updated for version 7.4.417
Problem:    After splitting a window and setting 'breakindent' the default
	    minimum with is not respected.
Solution:   Call briopt_check() when copying options to a new window.
Added tag v7-4-417 for changeset e60327caf909