Backport of "check: Use g_thread_yield instead of g_usleep(1)" into 1.16
Backport of !559 (merged) "check: Use g_thread_yield instead of g_usleep(1)".
Commits:
- 4b624559 check: Use g_thread_yield instead of g_usleep(1)
Backport of !559 (merged) "check: Use g_thread_yield instead of g_usleep(1)".
Commits: