Merge pull request #55 from lategoodbye/master

Improve multi reply binaries
use MBUS_ERROR instead of fprintf(stderr
use error_str instead of direct console output
error message if secondary address generation fails
improve error message in request data programs
bugfix in VIFE parser
bugfix for +1 error in VIFE parser
now VIFE and DIFE behave equal
fix memory leaks in error case
fix potential segmentation fault
Improve wildcard search
- handle collisions after request for secondary address
- check frame type correctly
- ignore M-Bus devices without secondary address