systemd: upgrade to 237

systemd: upgrade to 237

Upgrade systemd to 237.

Note that this version has dropped autotools support.

The following patches are rebased:
0004-Use-getenv-when-secure-versions-are-not-available.patch
0005-binfmt-Don-t-install-dependency-links-at-install-tim.patch
0007-use-lnr-wrapper-instead-of-looking-for-relative-opti.patch
0015-Revert-udev-remove-userspace-firmware-loading-suppor.patch
0018-check-for-uchar.h-in-configure.patch
0019-socket-util-don-t-fail-if-libc-doesn-t-support-IDN.patch
0001-add-fallback-parse_printf_format-implementation.patch
0002-src-basic-missing.h-check-for-missing-strndupa.patch
0007-check-for-missing-canonicalize_file_name.patch
0008-Do-not-enable-nss-tests.patch
0010-test-sizeof.c-Disable-tests-for-missing-typedefs-in-.patch
0011-nss-mymachines-Build-conditionally-when-HAVE_MYHOSTN.patch

The following backported patches are dropped:
0001-core-evaluate-presets-after-generators-have-run-6526.patch
0001-main-skip-many-initialization-steps-when-running-in-.patch
0001-meson-update-header-file-to-detect-memfd_create.patch
0003-fileio-include-sys-mman.h.patch

The following patch is dropped as autotools support is dropped:
0002-configure.ac-Check-if-memfd_create-is-already-define.patch

The following patches are newly added to fix problems:
0027-remove-nobody-user-group-checking.patch
0028-add-missing-FTW_-macros-for-musl.patch
0030-fix-missing-of-__register_atfork-for-non-glibc-build.patch
0031-fix-missing-ULONG_LONG_MAX-definition-in-case-of-mus.patch

Other changes are mostly autotools/meson related.

This new version has dropped ptest support, as there's no easy
way to do this in the framework of meson.

Signed-off-by: Chen Qi <Qi.Chen@windriver.com>