bug#12811: 24.3.50; `scroll-up/down-aggressively' don't seem to work as expected

[Dani Moncayo]

> (Regarding your fix, I'll test it and report the results when the
> emacs-24 branch is merged with the trunk)

Since such merge has been made, I've tested the original recipe.  The
first test (related to `scroll-up-aggressively') now gives the
expected result (point shown at line 4 - 70% from the bottom).

The second test (related to `scroll-down-aggressively') produces a
better result (point shown at line 9 - 80% from the top) but not the
expected one (line 8 - 70% from the top).

In any case, since the result is almost the right one, and more
importantly, since I've discovered that these two variables are not
worth the trouble, I'm ok with closing this bug report now.

I'll make a new bug report (feature request) to allow `scroll-step'
accept also a fractional number.

-- 
Dani Moncayo