fix mac os changes in serialdump
initialize the input serial flags in serialdump

this removes the excess new lines from the output
close serialdump and show an error when the serial device got disconnected
updated binary version of serialdump-linux
updated binary version of serialdump-macos
Merge pull request #1 from comawill/pull-req/serial-fix

updated binary version of serialdump-macos
uncrustified serialdump.c
Merge pull request #21 from yschroeder/pull-req/serial-fix

Fix for excess new lines on 'make login' and other changes to serialdump