fix switch to -gdwarf-4 on RHEL 8 (#2217938)
apply some testsuite fixes (#2217498)

don't require libgccjit-docs (#2216333)

update from releases/gcc-13 branch (#2188499)
PRs bootstrap/110085, c++/109871, fortran/100607, libgcc/109670,
end/110200, target/82931, target/92729, target/104327,
optimization/109505, tree-optimization/110165,
optimization/110166

update from releases/gcc-13 branch
PRs c++/80488, c++/83258, c++/97700, c++/103807, c++/109651, c++/109745,

update from releases/gcc-13 branch
PRs c++/91618, c++/96604, c++/109506, c++/109640, c++/109642, c++/109666,
optimization/109585,
optimization/109573, tree-optimization/109609,
optimization/109724, tree-optimization/109778

update from releases/gcc-13 branch (#2188499)
GCC 13.1 release
PRs c/107041, target/109566
remove libcc1

avoid fma_chain for -march=alderlake and sapphirerapids (#2168919)

provide libexec/ symlinks on all RHELs (#2164262)

build libisl.so with -g (#2154936)

apply an ISL patch (#2154936)

Fixed run-time requirement for annobin plugin. (#2151927)

Build the annobin plugin. Call it gts-gcc-annobin.so. (#2151927)

update from releases/gcc-12 branch (#2110583)
fix up std::from_chars behavior in rounding modes other than FE_TONEAREST

fix pr86731-fwrapv-longlong.c (#2134379)

add -static-libquadmath (#2131082)

recognize PLUS and XOR forms of rldimi (PR target/105991, #2095789)