openSUSE Security Update : gcc7 (openSUSE-2020-2301)

This update for gcc7 fixes the following issues : - CVE-2020-13844: Added mitigation for aarch64 Straight Line Speculation issue bsc1172798 - Enable fortran for the nvptx offload compiler. - Update README.First-for.SuSE.packagers - avoid assembler errors with AVX512 gather and scatter instruction...