[vala] poppler-glib: Update to 0.52.0

[Rico Tzschichholz <ricotz src gnome org>]

commit f23a4e7b2cd453a79a82b0fa80a2b5d9a867416f
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Sun Mar 12 21:55:42 2017 +0100

    poppler-glib: Update to 0.52.0

 vapi/poppler-glib.vapi |   39 ++++++++++++++++++++++++---------------
 1 files changed, 24 insertions(+), 15 deletions(-)
---
diff --git a/vapi/poppler-glib.vapi b/vapi/poppler-glib.vapi
index 2bef477..82e568b 100644
--- a/vapi/poppler-glib.vapi
+++ b/vapi/poppler-glib.vapi
@@ -305,27 +305,43 @@ namespace Poppler {
                public bool is_linearized ();
                public bool save (string uri) throws GLib.Error;
                public bool save_a_copy (string uri) throws GLib.Error;
-               public string author { owned get; }
-               public int creation_date { get; }
-               public string creator { owned get; }
+               [Version (since = "0.46")]
+               public void set_author (string author);
+               [Version (since = "0.46")]
+               public void set_creation_date (long creation_date);
+               [Version (since = "0.46")]
+               public void set_creator (string creator);
+               [Version (since = "0.46")]
+               public void set_keywords (string keywords);
+               [Version (since = "0.46")]
+               public void set_modification_date (long modification_date);
+               [Version (since = "0.46")]
+               public void set_producer (string producer);
+               [Version (since = "0.46")]
+               public void set_subject (string subject);
+               [Version (since = "0.46")]
+               public void set_title (string title);
+               public string author { owned get; set; }
+               public int creation_date { get; set; }
+               public string creator { owned get; set; }
                [NoAccessorMethod]
                public string format { owned get; }
                [NoAccessorMethod]
                public uint format_major { get; }
                [NoAccessorMethod]
                public uint format_minor { get; }
-               public string keywords { owned get; }
+               public string keywords { owned get; set; }
                [NoAccessorMethod]
                public bool linearized { get; }
                public string metadata { owned get; }
                [NoAccessorMethod]
-               public int mod_date { get; }
+               public int mod_date { get; set; }
                public Poppler.PageLayout page_layout { get; }
                public Poppler.PageMode page_mode { get; }
                public Poppler.Permissions permissions { get; }
-               public string producer { owned get; }
-               public string subject { owned get; }
-               public string title { owned get; }
+               public string producer { owned get; set; }
+               public string subject { owned get; set; }
+               public string title { owned get; set; }
                [NoAccessorMethod]
                public Poppler.ViewerPreferences viewer_preferences { get; }
        }
@@ -1025,13 +1041,6 @@ namespace Poppler {
                MULTILINE,
                FILE_SELECT
        }
-       [CCode (cheader_filename = "poppler.h", cprefix = "POPPLER_ORIENTATION_", type_id = 
"poppler_orientation_get_type ()")]
-       public enum Orientation {
-               PORTRAIT,
-               LANDSCAPE,
-               UPSIDEDOWN,
-               SEASCAPE
-       }
        [CCode (cheader_filename = "poppler.h", cprefix = "POPPLER_PAGE_LAYOUT_", type_id = 
"poppler_page_layout_get_type ()")]
        public enum PageLayout {
                UNSET,