Increase the lineheight in the new dialogs.

The default space was deemed to be a little bit too small.
http://www.wesnoth.org/forum/viewtopic.php?p=358832#p358832

changelog

@@ -11,6 +11,7 @@ Version 1.7.0+svn:
      situation worse
    * Add a new transient message dialog
    * Add a new multi page widget
+   * Increase the lineheight in the new dialogs
  * WML Engine:
    * Made new turn, turn X, side turn and turn refresh events synchronous.
      (bug #10603)

players_changelog

@@ -13,6 +13,7 @@ Version 1.7.0+svn:
 
   * User interface
     * Improved the layout to take less space in certain cases.
+    * Increase the lineheight in the new dialogs.
 
   * Miscellaneous and bugfixes
     * Fixed a crash in some storyscreens.

src/text.cpp

@@ -81,6 +81,12 @@ ttext::ttext() :
 
 	pango_layout_set_ellipsize(layout_, ellipse_mode_);
 
+	/*
+	 * Set the pango spacing a bit bigger since the default is deemed to small
+	 * http://www.wesnoth.org/forum/viewtopic.php?p=358832#p358832
+	 */
+	pango_layout_set_spacing(layout_, 2 * PANGO_SCALE);
+
 	cairo_font_options_t *fo = cairo_font_options_create();
 	cairo_font_options_set_hint_style(fo, CAIRO_HINT_STYLE_FULL);
 	cairo_font_options_set_hint_metrics(fo, CAIRO_HINT_METRICS_ON);