Alexander Boettcher a604ea6851 os: reprogram timer solely if needed
If an alarm/timeout object became head of the timeout queue, then the
low level timer must be reprogrammed.

Issue #1106
2014-04-01 16:42:37 +02:00
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2014-04-01 16:42:37 +02:00
2013-11-26 14:32:06 +01:00