[builds/unix] Do not use autoconf SIZEOF.
- builds/unix/ftconfig.h.in [FT_USE_AUTOCONF_SIZEOF_TYPES]: Removed.
- builds/unix/configure.raw: Remove AC_CHECK_SIZEOF and update.
After this commit, autoconf builds will fully rely on <limits.h> rather than falling back on it if AC_CHECK_SIZEOF failed for some reason. Note that Meson and CMake builds always relied on <limits.h> for sizes and availability of integer types.
Edited by Alexei Podtelezhnikov