- removed configure-based checks for using --noexecstack / -Wa,--noexecstack in make A{S,C,}FLAGS variables, b/c inconsistent behaviour across platforms and often unusable, b/c: * braindead defaults (e.g. ASFLAGS on pretty much everything GNU, used in default suffix rules with *both* cc for .S and as for .s) * often took decisions on bogus private STACK headers in ELF files, set on platforms that lack any implementation, so pointless * tests have shown that only some GNU/* platforms and FreeBSD actually make use of this, if at all, that is... and for those, will switch back to .section .note.GNU-stack (next commit)