Fix for epiphany with libportal-0.5.

This patch was adapted from upstream
https://gitlab.gnome.org/GNOME/epiphany/-/commit/e4d259f614f75c26ad0d2094f4f569ffd1bc06d1

diff --git a/lib/ephy-flatpak-utils.c b/lib/ephy-flatpak-utils.c
index 6fc9a5dec17a63c0660cbc1d95103c8f77231d30..0fd90b3f178392930e812a8391fd81bf1371b8bf 100644
--- a/lib/ephy-flatpak-utils.c
+++ b/lib/ephy-flatpak-utils.c
@@ -29,7 +29,7 @@
 #include <gio/gio.h>
 #include <gio/gunixfdlist.h>
 #if USE_LIBPORTAL
-#include <libportal/portal-gtk3.h>
+#include <libportal-gtk3/portal-gtk3.h>
 #endif
 #include <string.h>
 #include <sys/stat.h>
diff --git a/lib/meson.build b/lib/meson.build
index 264f9c5fb66268fc248f780b8d1c06c8291f856d..db0a0557f0ae634d7fb95e57aba0cd901ca4d6c1 100644
--- a/lib/meson.build
+++ b/lib/meson.build
@@ -66,6 +66,7 @@ libephymisc_deps = [
   libxml_dep,
   m_dep,
   portal_dep,
+  portal_gtk_dep,
   sqlite3_dep,
   webkit2gtk_dep
 ]
diff --git a/meson.build b/meson.build
index 0b9f862b22a23619289342ec39fa0a0274558c25..4285a975004e48366789a4e66f8b23f3af05a636 100644
--- a/meson.build
+++ b/meson.build
@@ -95,7 +95,8 @@ libhandy_dep = dependency('libhandy-1', version: '>= 1.5.0')
 libsecret_dep = dependency('libsecret-1', version: '>= 0.19.0')
 libxml_dep = dependency('libxml-2.0', version: '>= 2.6.12')
 nettle_dep = dependency('nettle', version: nettle_requirement)
-portal_dep = dependency('libportal', version: '>= 0.0.2', required: get_option('libportal'))
+portal_dep = dependency('libportal', version: '>= 0.5', required: get_option('libportal'))
+portal_gtk_dep = dependency('libportal-gtk3', version: '>= 0.5', required: get_option('libportal'))
 sqlite3_dep = dependency('sqlite3', version: '>= 3.22')
 
 if get_option('soup2').enabled()
@@ -108,7 +109,7 @@ else
   webkit2gtk_web_extension_dep = dependency('webkit2gtk-web-extension-4.1', version: webkitgtk_requirement)
 endif
 
-conf.set10('USE_LIBPORTAL', portal_dep.found())
+conf.set10('USE_LIBPORTAL', portal_dep.found() and portal_gtk_dep.found())
 
 webkit_revision = webkit2gtk_dep.get_variable(pkgconfig : 'revision', default_value : '')
 if webkit_revision == 'tarball'
b3e9f71c6b000'>images</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/doc/images?id=21ec74fc14e144e8fcff4faeac5b3e9f71c6b000&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-05-22 16:11:52 +0200'>2020-05-22</span></td><td><a href='/guix/commit/doc/images?id=cd5d5f53228fd5bf96d9f790aa2606ae71fa68d7'>doc: Update 'Bootstrapping' for further binary seed reduction.</a><span class='msg-avail'>...<span class='msg-tooltip'>* doc/images/gcc-core-mesboot0-graph.dot: New image, replacing
* doc/images/gcc-mesboot0-bag-graph.dot: ... remove file.
* doc/local.mk (DOT_FILES): Update for new image file.
* doc/guix.texi (Reduced Binary Seed Bootstrap): Use it in updated description
of further reduction of the trusted computing base.
</span></span></td><td>Jan Nieuwenhuizen</td></tr>
<tr><td><span title='2019-03-14 16:30:19 +0100'>2019-03-14</span></td><td><a href='/guix/commit/doc/images?id=19008a22d18e772062952034c58a15ed341df3b5'>Merge branch 'staging' into core-updates</a></td><td>Marius Bakke</td></tr>
<tr><td><span title='2019-03-13 23:12:43 +0100'>2019-03-13</span></td><td><a href='/guix/commit/doc/images?id=e1c15e8b8e25e14c253ff1212e289565736f6ea7'>doc: Document the graphical installer some more.</a><span class='msg-avail'>...<span class='msg-tooltip'>* doc/guix.texi (Preparing for Installation): Rewrite to specify the two
installation modes.
(Guided Graphical Installation): New node.
(Manual Installation): New node, with the former sections.
(After System Installation): New node.
* doc/images/installer-network.png, doc/images/installer-partitions.png,
doc/images/installer-resume.png: New files.
* doc/local.mk (dist_infoimage_DATA): Add them.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-12-16 22:49:10 +0100'>2018-12-16</span></td><td><a href='/guix/commit/doc/images?id=b3bf38a5600d0fdcb0aeed29ee121edef632165d'>doc: Update mesboot graph without bootstrap-guile.</a><span class='msg-avail'>...<span class='msg-tooltip'>* doc/images/gcc-mesboot-bag-graph.dot: Update.
</span></span></td><td>Jan Nieuwenhuizen</td></tr>
<tr><td><span title='2018-11-24 08:18:31 +0100'>2018-11-24</span></td><td><a href='/guix/commit/doc/images?id=3d3daf7fa1794c64914ed53e51838a41d9b7adc4'>doc: Update for bootstrap-mescc-tools change.</a><span class='msg-avail'>...<span class='msg-tooltip'>* doc/guix.texi (Reduced Binary Seed Bootstrap): Update for
bootstrap-mescc-tools change.
* doc/images/gcc-mesboot-bag-graph.dot: Regenerate.
</span></span></td><td>Jan Nieuwenhuizen</td></tr>
<tr><td><span title='2018-09-23 09:46:26 +0200'>2018-09-23</span></td><td><a href='/guix/commit/doc/images?id=a243722c5b8d50b4f0e3f9717ca71aa43dfc56a3'>doc: Describe the Reduced Binary Seed bootstrap.</a><span class='msg-avail'>...<span class='msg-tooltip'>* doc/guix.texi (Reduced Binary Seed Bootstrap): New node.
* doc/images/gcc-mesboot-bag-graph.dot: New file.
* doc/local.mk (DOT_FILES): Add it.
</span></span></td><td>Jan Nieuwenhuizen</td></tr>
<tr><td><span title='2016-12-17 14:46:42 +0100'>2016-12-17</span></td><td><a href='/guix/commit/doc/images?id=aaee461b9d5fb85fc1a548877dc7eea3dd4fbf50'>doc: Update dot graphs.</a><span class='msg-avail'>...<span class='msg-tooltip'>* doc/images/bootstrap-packages.dot,
doc/images/coreutils-bag-graph.dot, doc/images/coreutils-graph.dot,
doc/images/shepherd-graph.dot: Regenerate.
</span></span></td><td>Ludovic Courtès</td></tr>