add .hidden for _ZNSt10filesystem9_Dir_base7advanceEbRSt10error_code

update from releases/gcc-11-branch (#1986838)
GCC 11.2 release
PRs middle-end/101586, rtl-optimization/101562

require gcc-toolset-11-binutils at runtime (#1978081)

update from Fedora gcc 11.1.1-6 (#1946782)
PRs c++/100876, c++/100879, c++/101106, c/100619, c/100783, fortran/95501,
asm/100785,
end/100250, middle-end/100307, middle-end/100574,
end/100684, middle-end/100732, middle-end/100876,
end/101062, middle-end/101167, target/99842, target/99939,

update from Fedora gcc 11.1.1-5 (#1946782)
default to -gdwarf-4 (#1974402)

update from Fedora gcc 11.1.1-3 (#1946782)

use gcc-toolset-11-binutils

update from Fedora gcc 11.1.1-2
fix up mausezahn miscompilation (PR tree-optimization/100566)
fix build with removed linux/cyclades.h header (PR sanitizer/100379)
add a few Provides: bundled (#1859893)

update to GCC 11 (#1946782)

update from Fedora gcc 10.3.1-1 (#1929382)
drop gcc10-pr97060.patch
use --enable-cet
ship gcc-accel-nvptx-none-lto-dump
backport PR96939 fixes

actually use libgfortran_nonshared.a (#1929375)
have libasan-devel require libasan6 (#1939638)

apply fix for -flto=auto with missing make (#1896093, PR lto/97524)

update from Fedora gcc 10.2.1-8 (#1878887)
emit DW_AT_declaration on declaration-only DIEs (#1897272, PR debug/97060)
add BuildRequires: make and Requires: make, the latter for -flto reasons

adjust some libstdc++_nonshared.a symbol

update from Fedora gcc 10.2.1-7 (#1878887)

re-apply Fortran patches