Move keytab_copy to krb5samba lib

This is a helper fucntion that uses purely krb5 code, so it belongs to
krb5samba which is the krb5 wrapper for samba.

lib/krb5_wrap/keytab_util.c

@@ -34,8 +34,7 @@
  */
 
 #include "includes.h"
-#include "system/kerberos.h"
-#include "auth/kerberos/kerberos.h"
+#include "krb5_samba.h"
 
 static krb5_boolean
 compare_keyblock(const krb5_keyblock *a, const krb5_keyblock *b)

lib/krb5_wrap/krb5_samba.h

@@ -241,6 +241,17 @@ bool unwrap_edata_ntstatus(TALLOC_CTX *mem_ctx,
 			   DATA_BLOB *edata,
 			   DATA_BLOB *edata_out);
 
+
+krb5_error_code kt_copy(krb5_context context,
+			const char *from,
+			const char *to);
+krb5_error_code kt_copy_one_principal(krb5_context context,
+				      const char *from,
+				      const char *to,
+				      const char *principal,
+				      krb5_kvno kvno,
+				      krb5_enctype *enctypes);
+
 #endif /* HAVE_KRB5 */
 
 int cli_krb5_get_ticket(TALLOC_CTX *mem_ctx,

lib/krb5_wrap/wscript_build

@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 
 bld.SAMBA_LIBRARY('krb5samba',
-                  source='krb5_samba.c',
+                  source='krb5_samba.c keytab_util.c',
                   deps='samba-util asn1util talloc krb5 com_err',
 		  private_library=True
 		  )

source4/auth/kerberos/wscript_build

@@ -6,7 +6,7 @@ bld.SAMBA_SUBSYSTEM('KRB_INIT_CTX',
 		   )
 
 bld.SAMBA_LIBRARY('authkrb5',
-                  source='kerberos_pac.c keytab_copy.c',
+                  source='kerberos_pac.c',
                   autoproto='proto.h',
                   public_deps='ndr-krb5pac krb5samba samba_socket LIBCLI_RESOLVE asn1',
                   deps='auth_sam_reply tevent LIBPACKET ndr ldb krb5samba KRB_INIT_CTX KRB5_PAC errors',