configure.ac: add more compile warnings and add configure option to
convert warning to error

Signed-off-by: Andrey Skvortsov <Andrej.Skvortzov@gmail.com>
command_line.c: add ERR macro to simpler error output

Signed-off-by: Andrey Skvortsov <Andrej.Skvortzov@gmail.com>
command_line.c: replace atoi with strtoul

strtoul enables input in hex, dec and oct and enables more checks of
user input.

Signed-off-by: Andrey Skvortsov <Andrej.Skvortzov@gmail.com>
command_line.c: replace atof with strtod

Signed-off-by: Andrey Skvortsov <Andrej.Skvortzov@gmail.com>
check_modbus.c: replace fprintf(stderr with ERR macro as in command_line.c

Signed-off-by: Andrey Skvortsov <Andrej.Skvortzov@gmail.com>
command_line.c: add support for standard --version option

Signed-off-by: Andrey Skvortsov <Andrej.Skvortzov@gmail.com>
check_modbus.c: fix coredump, if dump as input is used

Signed-off-by: Andrey Skvortsov <Andrej.Skvortzov@gmail.com>
command_line.c: correct error handling for strtoul and strtod

Signed-off-by: Andrey Skvortsov <Andrej.Skvortzov@gmail.com>
updated change log and authors

Signed-off-by: Andrey Skvortsov <Andrej.Skvortzov@gmail.com>
add basic files for debian package

Signed-off-by: Andrey Skvortsov <Andrej.Skvortzov@gmail.com>
add ChangeLog and NEWS files

Signed-off-by: Andrey Skvortsov <Andrej.Skvortzov@gmail.com>
update .gitignore

Signed-off-by: Andrey Skvortsov <Andrej.Skvortzov@gmail.com>
change number of lock tests for quick testing

Signed-off-by: Andrey Skvortsov <Andrej.Skvortzov@gmail.com>
update files for debian package

Signed-off-by: Andrey Skvortsov <Andrej.Skvortzov@gmail.com>