kjhammerle/core: Kajetans C++ standard library without any C++ dependencies @ 493b3be1e7743ee0cc7f2f58336cb133f55eb07b

Kajetan Johannes Hammerle 493b3be1e7 Use return values instead of the error callback		2 lat temu
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Thread.cpp	493b3be1e7 Use return values instead of the error callback	2 lat temu
Thread.h	493b3be1e7 Use return values instead of the error callback	2 lat temu