Merge branch 'es/meson-cleanup'

Code clean-up for meson-based build infrastructure. * es/meson-cleanup: meson: only check for missing networking syms on non-Windows; add compat impls meson: fix typo in function check that prevented checking for hstrerror meson: add a couple missing networking dependencies meson: do a full usage-based compile check for sysinfo meson: check for getpagesize before using it meson: simplify and parameterize various standard function checks