- rewrite of logger_manager, uses now one instance per context

- cleanups for logger here and there
- removed critical flag check in payload verification (conformance to IKEv2)
- so thats and theres everywere... ;-)

Source/charon/encoding/payloads/nonce_payload.c

@@ -111,11 +111,6 @@ encoding_rule_t nonce_payload_encodings[] = {
  */
 static status_t verify(private_nonce_payload_t *this)
 {
-	if (this->critical)
-	{
-		/* critical bit is set! */
-		return FAILED;
-	}
 	if ((this->nonce.len < 16) || ((this->nonce.len > 256)))
 	{
 		/* nonce length is wrong */