A little progress made

I fully redid the timing operation of my microcontroller. Now it wakes
up every 1/10 second and records a time tick, and based on that I keep
track of time hours/minutes/seconds since start, and also of elapsed
time. I use elapsed time for preflow/postflow and such.

(wen I say wakes up, I must clarify that it does not sleep, it keeps
running the main loop, but it interrupts itself with a timer interrupt
evey 0.1 sec)

As always, the source code is released under GPL and is here

http://igor.chudov.com/projects/Welding/11-New-Rectifier/source.txt

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