Fix eog to work with libportal-0.5

This patch is extracted from upstream, see here
https://gitlab.gnome.org/GNOME/eog/-/commit/a06e6325907e136678b0bbe7058c25d688034afd

diff --git a/meson.build b/meson.build
index 9a32e4bb..9d49aa45 100644
--- a/meson.build
+++ b/meson.build
@@ -165,10 +165,14 @@ config_h.set('HAVE_EXEMPI', enable_xmp)
 # xdg-desktop-portal support with libportal (optional)
 enable_libportal = get_option('libportal')
 if enable_libportal
-  libportal_dep = dependency('libportal', version: '>= 0.3', required: false)
+  libportal_dep = dependency('libportal', version: '>= 0.5', required: false)
   assert(libportal_dep.found() and cc.has_header('libportal/portal.h', dependencies: libportal_dep),
          'xdg-desktop-portal support requested but library not found. Please use -Dlibportal=false')
 
-  common_deps += libportal_dep
+  libportal_gtk3_dep = dependency('libportal-gtk3', version: '>= 0.5', required: false)
+  assert(libportal_gtk3_dep.found() and cc.has_header('libportal-gtk3/portal-gtk3.h', dependencies: libportal_gtk3_dep),
+         'xdg-desktop-portal support requested but library not found. Please use -Dlibportal=false')
+
+  common_deps += [libportal_dep, libportal_gtk3_dep]
 endif
 config_h.set('HAVE_LIBPORTAL', enable_libportal)

diff --git a/src/eog-util.c b/src/eog-util.c
index 90b9768e..56d23472 100644
--- a/src/eog-util.c
+++ b/src/eog-util.c
@@ -45,7 +45,7 @@
 #include <glib/gi18n.h>
 #ifdef HAVE_LIBPORTAL
 #include <libportal/portal.h>
-#include <libportal/portal-gtk3.h>
+#include <libportal-gtk3/portal-gtk3.h>
 #endif
 
 void
n='/guix/log/tests/keys/signing-key.sec'>
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<option value='grep'>log msg</option>
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<option value='committer'>committer</option>
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</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=ff0a6988f819d52185cec5851c71bdd1d12eaa2c'>root</a>/<a href='/guix/log/tests?id=ff0a6988f819d52185cec5851c71bdd1d12eaa2c'>tests</a>/<a href='/guix/log/tests/keys?id=ff0a6988f819d52185cec5851c71bdd1d12eaa2c'>keys</a>/<a href='/guix/log/tests/keys/signing-key.sec?id=ff0a6988f819d52185cec5851c71bdd1d12eaa2c'>signing-key.sec</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/tests/keys/signing-key.sec?id=ff0a6988f819d52185cec5851c71bdd1d12eaa2c&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2021-12-22 10:53:19 +0100'>2021-12-22</span></td><td><a href='/guix/commit/tests/keys/signing-key.sec?id=9ebc9ca070a21ba0aeb3f61202a8071bb250ccc8'>tests: Move keys into ./tests/keys/ and add a third ed25519 key.</a><span class='msg-avail'>...</span></td><td>Attila Lendvai</td></tr>