Move ident authentication code into auth.c along with the other authenciation

routines, leaving hba.c to deal only with processing the HBA specific files.

src/include/libpq/hba.h

@@ -4,7 +4,7 @@
  *	  Interface to hba.c
  *
  *
- * $PostgreSQL: pgsql/src/include/libpq/hba.h,v 1.47 2007/07/23 10:16:54 mha Exp $
+ * $PostgreSQL: pgsql/src/include/libpq/hba.h,v 1.48 2008/08/01 09:09:48 mha Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -40,8 +40,10 @@ extern void load_hba(void);
 extern void load_ident(void);
 extern void load_role(void);
 extern int	hba_getauthmethod(hbaPort *port);
-extern int	authident(hbaPort *port);
 extern bool read_pg_database_line(FILE *fp, char *dbname, Oid *dboid,
 					  Oid *dbtablespace, TransactionId *dbfrozenxid);
+extern bool check_ident_usermap(const char *usermap_name,
+					  const char *pg_role, const char *ident_user);
+extern bool pg_isblank(const char c);
 
 #endif   /* HBA_H */