Restructured the compat functions and changed its license.

New fucntion xstrconcat for future use.

keyserver/ksmalloc.c

@@ -0,0 +1,32 @@
+/* ksmalloc.c - Walloc wrapper
+ * Copyright (C) 2009 Free Software Foundation, Inc.
+ *
+ * The origin of this code is GnuPG.
+ *
+ * This file is free software; as a special exception the author gives
+ * unlimited permission to copy and/or distribute it, with or without
+ * modifications, as long as this notice is preserved.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#include <stdlib.h>
+
+/* A wrapper around malloc because libcompat requires it.  */
+void *
+xtrymalloc (size_t n)
+{
+  return malloc (n);
+}
+
+
+/* A wrapper around free becuase we are used to it.  */
+void
+xfree (void *p)
+{
+  if (p)
+    free (p);
+}
+