This update for gcc13 fixes the following issues:

- Fix unwinding for JIT code.  [bsc#1221239] 
- Revert libgccjit dependency change.  [bsc#1220724]
- Remove crypt and crypt_r interceptors. The crypt API change in SLE15 SP3
  breaks them.  [bsc#1219520]
- Add support for -fmin-function-alignment.  [bsc#1214934]
- Use %{_target_cpu} to determine host and build.
- Fix for building TVM.  [bsc#1218492]
- Add cross-X-newlib-devel requires to newlib cross compilers.
  [bsc#1219031]
- Package m2rte.so plugin in the gcc13-m2 sub-package rather than in gcc13-devel.  [bsc#1210959]
- Require libstdc++6-devel-gcc13 from gcc13-m2 as m2 programs are linked against libstdc++6.
- Fixed building mariadb on i686.  [bsc#1217667]
- Avoid update-alternatives dependency for accelerator crosses.
- Package tool links to llvm in cross-amdgcn-gcc13 rather than in
  cross-amdgcn-newlib13-devel since that also has the dependence.
- Depend on llvmVER instead of llvm with VER equal to
  %product_libs_llvm_ver where available and adjust tool discovery
  accordingly.  This should also properly trigger re-builds when
  the patchlevel version of llvmVER changes, possibly changing
  the binary names we link to.  [bsc#1217450]