[kernel] shorten Dune_site_dir to Site_dir

src/kernel_services/cmdline_parameters/parameter_sig.ml

@@ -331,7 +331,7 @@ end
 
     @since Frama-C+dev
 *)
-module type Dune_site_dir = sig
+module type Site_dir = sig
   val set: Filepath.Normalized.t -> unit
   (** Sets the <dune-site-dir> directory (without creating it). *)
 

src/kernel_services/plugin_entry_points/plugin.ml

@@ -42,7 +42,7 @@ module type S_no_log = sig
   val add_group: ?memo:bool -> string -> Cmdline.Group.t
   module Verbose: Parameter_sig.Int
   module Debug: Parameter_sig.Int
-  module Share: Parameter_sig.Dune_site_dir
+  module Share: Parameter_sig.Site_dir
   module Session: Parameter_sig.User_dir
   module Cache_dir () : Parameter_sig.User_dir
   module Config_dir () : Parameter_sig.User_dir
@@ -291,7 +291,7 @@ struct
   (** {3 Specific directories} *)
   (* ************************************************************************ *)
 
-  module Share : Parameter_sig.Dune_site_dir = struct
+  module Share : Parameter_sig.Site_dir = struct
     let is_visible = !share_visible_ref
     let is_kernel = is_kernel () (* the side effect must be applied right now *)
 

src/kernel_services/plugin_entry_points/plugin.mli

@@ -47,7 +47,7 @@ module type S_no_log = sig
       @since Oxygen-20120901
       @before Frama-C+dev more modes were allowed
   *)
-  module Share: Parameter_sig.Dune_site_dir
+  module Share: Parameter_sig.Site_dir
 
   (** Handle the specific `session' directory of the plug-in.
       @since Neon-20140301 *)