Don't attempt to error correct DF-11

Don't attempt to error correct DF-11, because we can't be sure that the
checksum/crc is supposed to be 0.

Also a few typo's corrected
Speed up Error Correction

Move memcopy to outside the main bit loop, and just flip the modified
bit back at the end of each loop if it didn;t work

Pass in a pointer to the mm structure being corrected, and fix-up the
crc with the value inside the function, rather than re-calculate on
return
Speed up Squawk Decode

Re-write to avoid multiple reads of the same memory variable.
Print DF-11 II/SI
Correct CRLF order in SBS-1 ASCII output
Added --net-ro-rate command line switch

The default is 0. This works in conjunction with --net-ro-size.

The program will attempt to gather up "net-ro-size" raw bytes before
sending them out over Ethernet. However, to avoid a long wait if the
traffic density is very low, the program will only wait for
"net-ro-rate" 64mS periods since the last send. before sending any data
added to the output buffer since the last send. This allows the user to
tailor the network load to suit their requirements.
Up issue the version and commit

Version 1.01.1503.13