[gthumb/wip/kalev/exiv2-0.27] Fix the build with exiv2 0.27

[Kalev Lember <klember src gnome org>]

commit c04a93bdfb575dfa6461e3207334335a9c1bad51
Author: Kalev Lember <klember redhat com>
Date:   Thu Jan 31 15:01:02 2019 +0100

    Fix the build with exiv2 0.27
    
    Fixes: https://gitlab.gnome.org/GNOME/gthumb/issues/30

 extensions/exiv2_tools/exiv2-utils.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)
---
diff --git a/extensions/exiv2_tools/exiv2-utils.cpp b/extensions/exiv2_tools/exiv2-utils.cpp
index 4513771c..9efa944f 100644
--- a/extensions/exiv2_tools/exiv2-utils.cpp
+++ b/extensions/exiv2_tools/exiv2-utils.cpp
@@ -32,7 +32,10 @@
 #include <sstream>
 #include <vector>
 #include <iomanip>
-#include <exiv2/xmp.hpp>
+#include <exiv2/exiv2.hpp>
+#if EXIV2_TEST_VERSION(0, 21, 0)
+#include <exiv2/xmp_exiv2.hpp>
+#endif
 #include <gthumb.h>
 #include "exiv2-utils.h"
 
@@ -1071,7 +1074,11 @@ dump_exif_data (Exiv2::ExifData &exifData,
 
        try {
                if (exifData.empty()) {
+#if EXIV2_TEST_VERSION(0,27,0)
+                       throw Exiv2::Error(Exiv2::kerErrorMessage, " No Exif data found in the file");
+#else
                        throw Exiv2::Error(1, " No Exif data found in the file");
+#endif
                }
                Exiv2::ExifData::const_iterator end = exifData.end();
                for (Exiv2::ExifData::const_iterator i = exifData.begin(); i != end; ++i) {