kjhammerle/core: Kajetans C++ standard library without any C++ dependencies @ 953f95d3f29aebd14f1cd4b375474980ba51a0a8

Kajetan Johannes Hammerle 493b3be1e7 Use return values instead of the error callback		1 rok temu
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Thread.cpp	493b3be1e7 Use return values instead of the error callback	1 rok temu
Thread.h	493b3be1e7 Use return values instead of the error callback	1 rok temu