build-sys: meson: check if NEON code can be compiled on arm
When Meson SIMD module returns HAVE_NEON=1 on arm host, do extra compile check to verify compiler can actually handle NEON code.
Related Meson issue #6361 https://github.com/mesonbuild/meson/issues/6361
Tested in environment similar to Debian armel sbuild chroot.
Fixes #1219 (closed)
Edited by Igor Kovalenko