Mark plugin-path as obsolete

NEWS

@@ -6,6 +6,8 @@ Important changes for packagers:
    its file systems and files content (except the Windows port). If this is
    not acceptable, pass --enable-non-utf8 to the configure script.
    Non-UTF-8 file systems support will be removed in future versions.
+ * The VLC plugins path can be overriden with the VLC_PLUGIN_PATH environment
+   variable. The --plugin-path command line option was removed.
  * The default tarballs are now .tar.xz
 
  * The NPAPI webplugin has moved to git://git.videolan.org/npapi-vlc.git

src/libvlc-module.c

@@ -2069,9 +2069,7 @@ vlc_module_begin ()
     add_bool( "plugins-cache", true, PLUGINS_CACHE_TEXT,
               PLUGINS_CACHE_LONGTEXT, true )
         change_need_restart ()
-    add_directory( "plugin-path", NULL, PLUGIN_PATH_TEXT,
-                   PLUGIN_PATH_LONGTEXT, true )
-        change_need_restart ()
+    add_obsolete_string( "plugin-path" )
     add_directory( "data-path", NULL, DATA_PATH_TEXT,
                    DATA_PATH_LONGTEXT, true )
         change_need_restart ()