- unbound.h has extern "C" statement for easier include in c++.

git-svn-id: file:///svn/unbound/trunk@2169 be551aaa-1e26-0410-a405-d3ace91eadb9

doc/Changelog

@@ -2,6 +2,7 @@
 	- Fix handling of corner case reply from lame server, follows rfc2308.
 	  It could lead to a nodata reply getting into the cache if the search
 	  for a non-lame server turned up other misconfigured servers.
+	- unbound.h has extern "C" statement for easier include in c++.
 
 23 June 2010: Wouter
 	- iana portlist updated.

libunbound/unbound.h

@@ -93,6 +93,10 @@
 #ifndef _UB_UNBOUND_H
 #define _UB_UNBOUND_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /**
  * The validation context is created to hold the resolver status,
  * validation keys and a small cache (containing messages, rrsets,
@@ -539,4 +543,8 @@ int ub_ctx_data_add(struct ub_ctx* ctx, char *data);
  */
 int ub_ctx_data_remove(struct ub_ctx* ctx, char *data);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* _UB_UNBOUND_H */