Adds REQUEST_FULL and REQUEST_FULL_LENGTH variables

This variable is a combination from REQUEST_LINE, REQUEST_HEADERS and
REQUEST_BODY (if any). Expects for \n\n in between each of those values.

apache2/modsecurity.h

@@ -355,6 +355,9 @@ struct modsec_rec {
 
     apr_size_t           msc_reqbody_no_files_length;
 
+    char		*msc_full_request_buffer;
+    int			msc_full_request_length;
+
     char                *multipart_filename;
     char                *multipart_name;
     multipart_data      *mpd;                        /* MULTIPART processor data structure */