In GroupScroller, do not manually adjust indents in set_border_width(), set_h_scroll(), and set_v_scroll().  Call setup_indents() instead - which now performs all indents calculations.
In GroupScroller, do not manually adjust indents in set_border_width(),
set_h_scroll(), and set_v_scroll().  Call setup_indents() instead -
which now performs all indents calculations.

This was needed since setup_indents() may be overloaded to take into
account other insertions.  In particular, if something is inserted
immediately above the hscroll (if present), the old method led to
incorrect calculations of the number of visible rows in the
AbstractListViewer on its resize.

run4flat/Primo,run4flat/Primo