pdf: Use poppler_annot_markup_set_popup_rectangle() if available

This way we don't create a new popup annotation every time we save the
window position.

backend/pdf/ev-poppler.cc

@@ -3358,7 +3358,14 @@ pdf_document_annotations_save_annotation (EvDocumentAnnotations *document_annota
 			poppler_rect.y1 = height - ev_rect.y2;
 			poppler_rect.y2 = height - ev_rect.y1;
 
-			poppler_annot_markup_set_popup (markup, &poppler_rect);
+			if (poppler_annot_markup_has_popup (markup))
+#ifdef HAVE_POPPLER_ANNOT_MARKUP_SET_POPUP_RECTANGLE
+				poppler_annot_markup_set_popup_rectangle (markup, &poppler_rect);
+#else
+			        poppler_annot_markup_set_popup (markup, &poppler_rect);
+#endif
+			else
+				poppler_annot_markup_set_popup (markup, &poppler_rect);
 		}
 		if (mask & EV_ANNOTATIONS_SAVE_POPUP_IS_OPEN)
 			poppler_annot_markup_set_popup_is_open (markup, ev_annotation_markup_get_popup_is_open (ev_markup));

configure.ac

@@ -507,6 +507,11 @@ if test "x$enable_pdf" = "xyes"; then
 	    if test x$enable_cairo_ps = xyes; then
 	            AC_DEFINE([HAVE_CAIRO_PS], [1], [defined if cairo-ps is available])
             fi
+
+            evince_save_LIBS=$LIBS
+            LIBS="$LIBS $POPPLER_LIBS"
+            AC_CHECK_FUNCS(poppler_annot_markup_set_popup_rectangle)
+            LIBS=$evince_save_LIBS
     else
 	    AC_MSG_ERROR("PDF support is disabled since poppler-glib library version $POPPLER_REQUIRED or newer not found")
     fi