1-Wire bus search algorithm, new C implementation

Ondřej Hruška cc979602f3 added some includes that should probably be in the header file		pirms 6 gadiem
.gitignore	code import	pirms 6 gadiem
LICENSE	Initial commit	pirms 6 gadiem
README.md	readme	pirms 6 gadiem
main.c	added some includes that should probably be in the header file	pirms 6 gadiem
ow_search.c	added checksum support	pirms 6 gadiem
ow_search.h	added some includes that should probably be in the header file	pirms 6 gadiem

1-Wire search algorithm

This project provides a reimplemented 1-Wire bus search algorithm (used to identify e.g. DS18x20 thermometers on a common open-drain bus).

The algorithm uses no global variables and allows finding a unlimited number of bus devices.

For an example of usage, see main.c.