Update util code and import Kerberos portability glue

Use the Kerberos portability layer from rra-c-util 3.0 and avoid
Kerberos API calls deprecated on Heimdal.  Break util/util.h into
separate header files and update all source files accordingly.

The test suite is not yet updated.  That will come in subsequent
commits.

1 files changed, 17 insertions, 0 deletions

diff --git a/util/macros.h b/util/macros.h
new file mode 100644
index 0000000..97b2c2b
--- /dev/null
+++ b/util/macros.h
@@ -0,0 +1,17 @@
+/*
+ * Some standard helpful macros.
+ *
+ * Written by Russ Allbery <rra@stanford.edu>
+ * This work is hereby placed in the public domain by its author.
+ */
+
+#ifndef UTIL_MACROS_H
+#define UTIL_MACROS_H 1
+
+#include <config.h>
+#include <portable/macros.h>
+
+/* Used for unused parameters to silence gcc warnings. */
+#define UNUSED __attribute__((__unused__))
+
+#endif /* UTIL_MACROS_H */