Michał Kępień bad0f6d49d Improve reporting for condition variable errors ...

Replace all uses of RUNTIME_CHECK() in lib/isc/include/isc/condition.h
with ERRNO_CHECK(), in order to improve error reporting for any
condition-variable-related run-time failures (by augmenting error
messages with file/line/caller information and the error string
corresponding to errno).

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isc

Improve reporting for condition variable errors

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.clang-format

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