moved typedefs to beginning of files to solve some include problems

splitted authenticator to have a separate implementation for each auth_method_t
using va_copy to clone va_lists, should fix proplems on AMD64
some other cleanups

src/charon/encoding/payloads/ike_header.h

@@ -24,6 +24,9 @@
 #ifndef IKE_HEADER_H_
 #define IKE_HEADER_H_
 
+typedef enum exchange_type_t exchange_type_t;
+typedef struct ike_header_t ike_header_t;
+
 #include <types.h>
 #include <encoding/payloads/payload.h>
 
@@ -55,8 +58,6 @@
  */
 #define IKE_HEADER_LENGTH 28
 
-typedef enum exchange_type_t exchange_type_t;
-
 /**
  * @brief Different types of IKE-Exchanges.
  *
@@ -99,9 +100,6 @@ enum exchange_type_t{
  */
 extern enum_name_t *exchange_type_names;
 
-
-typedef struct ike_header_t ike_header_t;
-
 /**
  * @brief An object of this type represents an IKEv2 header and is used to 
  * generate and parse IKEv2 headers.