updated for version 7.4.348
Problem:    When using "J1" in 'cinoptions' a line below a continuation line
	    gets too much indent.
Solution:   Fix parenthesis in condition.
Added tag v7-4-348 for changeset 0b7586868f6d
updated for version 7.4.349
Problem:    When there are matches to highlight the whole window is redrawn,
	    which is slow.
Solution:   Only redraw everything when lines were inserted or deleted.
	    Reset b_mod_xlines when needed.  (Alexey Radkov)
Added tag v7-4-349 for changeset 79950dae1d7d