fixed missing CVS IDs

c/src/lib/libc/hosterr.c

@@ -9,6 +9,7 @@
  *  to the copyright license under the clause at DFARS 252.227-7013.  This
  *  notice must appear in all copies of this file and its derivatives.
  *
+ *  $Id$
  */
 
 #include <rtems.h>

c/src/lib/libc/unixlibc.c

@@ -1,3 +1,7 @@
+/*
+ *  $Id$
+ */
+
 #if defined(RTEMS_UNIXLIB)
 
 void libc_init(int reentrant)

c/src/lib/libc/utsname.c

@@ -1,5 +1,6 @@
 /*  utsname.c 
  *
+ *  $Id$
  */
 
 #include <stdio.h>