[blfs-support] libffi needed CFLAGS=-march=native CXXFLAGS=-march=native

When I tried to make check for libffi in the instructions for 8.1 (http://www.linuxfromscratch.org/blfs/view/stable/general/libffi.html) most of the test failed with some "trap ... opcode" failure. As per

[blfs-support] LFS and BLFS Version 8.2 are released

The Linux From Scratch community is pleased to announce the release of LFS Version 8.2, LFS Version 8.2 (systemd), BLFS Version 8.2, and BLFS Version 8.2 (systemd). This release is a major update to both LFS and BLFS. The LFS release includes updates to glibc-2.27, binutils-2.30, and