print: Use cairo_save/cairo_restore to manage temporary cairo changes

The print_weight_data function was making several cairo_translate
calls and then doing some final cairo_translate calls with the goal of
manually undoing any changes to cairo's state. Obviously, this is
fragile.

Cairo provides save/restore calls which solve this problem in a robust
way. Switch to using these instead.

Signed-off-by: Carl Worth <cworth@cworth.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
print: Use logical text extents to layout text in weight system box

The old code was computing locations based on relative portions of the
available height. The correct thing to do, (and done here in the
patch), is to advance by the logical height of rendered text each
time.

What's stll missing is anything to guarantee that the text drawn will
fit in the box. The correct answer here is along one of two lines:

  1. Use the logical text extents to decide what size to draw the box.

  2. Use a pre-computed box size and choose a font size that will fit

Either approach will involve a fairly substantial reworking of the
rendering code in print.c.

Signed-off-by: Carl Worth <cworth@cworth.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Move flag icon to include file

Just like with the satellite icon we are creating a pixdata structure for
the flag.

The Makefile cleanup in commit df6a9ddd8a21 ("Auto-generate C file
dependencies, and make the build more quiet") removed the rules for
generating the .h file by mistake (I hope).

This adds a more generic rule back in and also makes sure that the data
structures get more useful names.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Bump version number to 2.9

This is intended as a visual sign that we are getting closer to 3.0.

We should consider this a "soft" code freeze / string freeze - I'm still
looking for a bunch of fixes, small additions and of course documentation,
but no new major features.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Fix the rules for creating the windows .nsi file

This was one of the reasons why I tagged version 2.9. I wanted to test all
the Makefile magic we added to get sane and automated versions on Windows
and Linux. And it turned out my sed script failed in rather obvious ways.

These changes appear to fix that - but of course you won't see that unless
you reset your git repository to the tag and manually apply this patch.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Updated PO files in preparation of 3.0 release

Translators, please start your engines...

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Quick attempt to complete the German translations

This will need careful review by German speakers who actually dive in
German speaking countries!

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>