* Use new unified status_flag accessor methods from classes fhandler_*,

tty_min, mtinfo and fs_info thoroughout.
	* fhandler.h: Redefine all set_close_on_exec methods to take a bool
	argument.
	(enum conn_state): Rename from connect_state.
	(class fhandler_base): Rename some status flags to align with
	accessor method names.  Drop encoded flag entirely.  Unify status
	accessor methods.  Const'ify all read accessor methods.
	(class fhandler_socket): Ditto.
	(class fhandler_dev_raw): Ditto.
	* fhandler_disk_file.cc (fhandler_base::fstat_fs): Use fs.fs_is_fat()
	instead of evaluating FATness of file system here.
	(fhandler_disk_file::opendir): Drop call to set_encoded().
	(fhandler_disk_file::readdir): Use pc.isencoded() directly.
	* mtinfo.h (class mtinfo_drive): Const'ify all read accessor methods.
	* path.cc (fsinfo_cnt): Add.
	(fs_info::update): Accomodate class changes. Evaluate file system
	name specific flags right here. Add thread safety for reading and
	writing global fsinfo array.
	* path.h (enum path_types): Drop values for flags kept in fs already.
	(struct fs_info): Move status informatin into private struct type
	status_flags.  Add accessor methods. Remove path and file system
	name string arrays in favor of status bits.
	(class path_conv): Use new fs_info status information where
	appropriate.
	(path_conf::fs_has_ea): Rename from fs_fast_ea.
	(path_conf::fs_has_acls): New method.
	(path_conf::root_dir): Remove.
	(path_conf::volname): Remove.
	* syscalls (statfs): Evaluate root dir locally.
	* tty.h (class tty_min): Unify status accessor methods.  Const'ify
	all read accessor methods.

winsup/cygwin/tty.h

@@ -49,11 +49,10 @@ public:
   int ntty;
   DWORD last_ctrl_c;	// tick count of last ctrl-c
 
+  bool initialized () const { return status.initialized; }
   void initialize () { status.initialized = 1; }
-  bool is_initialized () { return status.initialized; }
-  void set_rstcons () { status.rstcons = 1; }
-  void clear_rstcons () { status.rstcons = 1; }
-  bool needs_rstcons () { return status.rstcons; }
+  bool rstcons () const { return status.rstcons; }
+  void rstcons (bool b) { status.rstcons = b; }
 
   tty_min (int t = -1, pid_t s = -1) : sid (s), ntty (t) {}
   void setntty (int n) {ntty = n;}