Rename EogDebugSection to EogDebug

Also rename EOG_NO_DEBUG to EOG_DEBUG_NO_DEBUG for clarity in bindings.

Based on eog commit 5f66a42b0f445b181b4612474af43b7304104684
From Claudio Saavedra <csaavedra@igalia.com>
Wrap ExifData in a EogExifData boxed type

This is for better interaction with bindings

Based on eog commit b88d3713fe45a4bab1bd24ac8ff60551c5c31d49
From Claudio Saavedra <csaavedra@igalia.com>
Allow disabling the save-on-close confirmation dialog

Based on eog commit 20d1a4a24ea4d1ae25cec467ee7be364a8ab82cb
From Felix Riemann <friemann@gnome.org>
Fix Makefile for ui files.