better split up of library files "types.h" & "definitions.h"

centralized all printf specifier character definitions
reuse of arginfo handlers
more cleanups
fixed more AMD64 issues
added DEBUG_LEVEL compile flag to exclude DBGn() statements

src/charon/encoding/payloads/certreq_payload.c

@@ -258,7 +258,7 @@ certreq_payload_t *certreq_payload_create()
 	this->critical = FALSE;
 	this->next_payload = NO_PAYLOAD;
 	this->payload_length =CERTREQ_PAYLOAD_HEADER_LENGTH;
-	this->certreq_data = CHUNK_INITIALIZER;
+	this->certreq_data = chunk_empty;
 
 	return (&(this->public));
 }