Revision 196009

Do text align before the line is rendered, not when the line is closed.
Moved page number resolving to just before text align. Removed page
number resolving from renderers.
Also, fix leader expansion in case page number resolving has eaten up
too much space for the page number, resolving in a possible area overflow.
Leaders may now be shortened down to leader-length.minimum if necessary.
PR: 1130, 17194