fix a number of compiler warnings in os/*

os/access.c

@@ -67,6 +67,9 @@ SOFTWARE.
 
 #include <stdio.h>
 #include <stdlib.h>
+#define XSERV_t
+#define TRANS_SERVER
+#define TRANS_REOPEN
 #include <X11/Xtrans/Xtrans.h>
 #include <X11/Xauth.h>
 #include <X11/X.h>

os/io.c

@@ -66,6 +66,9 @@ SOFTWARE.
 #include <X11/Xwinsock.h>
 #endif
 #include <stdio.h>
+#define XSERV_t
+#define TRANS_SERVER
+#define TRANS_REOPEN
 #include <X11/Xtrans/Xtrans.h>
 #include <X11/Xmd.h>
 #include <errno.h>

os/utils.c

@@ -68,6 +68,9 @@ OR PERFORMANCE OF THIS SOFTWARE.
 #include <stdio.h>
 #include "misc.h"
 #include <X11/X.h>
+#define XSERV_t
+#define TRANS_SERVER
+#define TRANS_REOPEN
 #include <X11/Xtrans/Xtrans.h>
 #include "input.h"
 #include "dixfont.h"

os/xdmauth.c

@@ -41,6 +41,9 @@ from The Open Group.
 
 #include <stdio.h>
 #include <X11/X.h>
+#define XSERV_t
+#define TRANS_SERVER
+#define TRANS_REOPEN
 #include <X11/Xtrans/Xtrans.h>
 #include "os.h"
 #include "osdep.h"
@@ -153,9 +156,9 @@ XdmAuthenticationInit (char *cookie, int cookie_len)
     XdmcpRegisterAuthentication (XdmAuthenticationName, XdmAuthenticationNameLen,
 				 (unsigned char *)&rho,
 				 sizeof (rho),
-				 XdmAuthenticationValidator,
-				 XdmAuthenticationGenerator,
-				 XdmAuthenticationAddAuth);
+				 (ValidatorFunc)XdmAuthenticationValidator,
+				 (GeneratorFunc)XdmAuthenticationGenerator,
+				 (AddAuthorFunc)XdmAuthenticationAddAuth);
 }
 
 #endif /* XDMCP */