gtkui: Use standard types (and bool_t).
gtkui: Rewrite search callback using strstr_nocase_utf8().
gtkui: Eliminate untracked string allocations..
search-tool: Use string pool in a couple of places.
search-tool: Use str_tolower_utf8() and str_list_to_index().
skins: gtk_widget_set_sensitive() does not block cursor-changed signal.
skins: Silence a warning that gets printed with certain skins.
skins: Remove a duplicate signal connection and add a necessary one.
skins: Create more of the settings window using PreferencesWidgets.
skins: Use PluginPreferences.
gtkui: Interface menu is no longer needed.
skins: Interface menu is no longer needed.
gtkui: Apply column changes immediately.
gtkui: Add PluginPreferences page.
gtkui: Minor visual tweak.
gtkui: "Effects" and "Visualizations" menu items now go directly to the settings window.
skins: Remove unused "show main menu" hook.
skins: Revert obscure feature of showing effects menu in equalizer window.
ffaudio: Fix too-early exit from format detection loop.
skins: Move visualization settings to PluginPreferences.