Make the map provider choice a preference

Not all of the providers seem to work for me (Yahoo Satellite doesn't
appear to give me any data), but for now I'll leave most of them in.
We can later decide to offer only some of them.

It might be more fun to be able to pick the provider directly from the map
widget. But for now I kept this in the preferences which seemed to be a
good place for it.

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

1 files changed, 1 insertions, 0 deletions

diff --git a/pref.h b/pref.h
index c4287aa3b..60fe1104c 100644
--- a/pref.h
+++ b/pref.h
@@ -33,6 +33,7 @@ struct preferences {
 	gboolean calc_ceiling_3m_incr;
 	double gflow;
 	double gfhigh;
+	int map_provider;
 	const char *divelist_font;
 	const char *default_filename;
 };