Merge some patches from Livio Baldini

[rodarima]

From: https://www.linux.ime.usp.br/~livio/dillo/

• save_scrolling_position.diff - (against 0.6.0) This adds a feature to Dillo. It records the last position the user scrolled to in a page, and when the user gets "Back" to that page, that position is used, instead of always going to the top!

• file.diff - (against 0.3.0) This doesn't fix any bug, but fixes a Dillo behaviour which I consider to be wrong. When you type in an URL like:

/home/livio/

Dillo will try to search for the server http://home/livio. I think this is wrong, instead dillo should "guess" this is a local file and try to resolve file:/home/livio.

save_scrolling_position.diff.txt
file.diff.txt