zloop: ignore EINTR from poll if nonstop is enabled #115

Job	Run time
build (ubuntu-20.04, default, enabled, clang-format-11, automake autoconf clang-format-11 git uui...	3m 42s
build (ubuntu-20.04, default, disabled, clang-format-11, automake autoconf clang-format-11 git uu...	2m 59s
build (ubuntu-20.04, valgrind, enabled, automake autoconf valgrind git uuid-dev libsystemd-dev li...	1m 40s
build (ubuntu-20.04, cmake, enabled, cmake git uuid-dev libsystemd-dev liblz4-dev libnss3-dev lib...	1m 22s
build (macos-latest, default, automake autoconf ossp-uuid zeromq curl libmicrohttpd, enabled)	2m 0s
build (macos-latest, default, disabled, automake autoconf ossp-uuid zeromq curl libmicrohttpd)	1m 47s
build (ubuntu-20.04, cmake, 1, clang-format-11, cmake clang-format-11 git uuid-dev libsystemd-dev...	50s
build (ubuntu-20.04, abi-compliance-checker, universal-ctags abi-dumper abi-compliance-checker gi...	1m 3s
build (ubuntu-20.04, check_zproject, git uuid-dev libsystemd-dev liblz4-dev libnss3-dev libzmq3-d...	38s
	16m 1s

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