gcc-9 (9.3.0-15) unstable; urgency=medium
* Update to git
20200713 from the gcc-9 branch.
- Fix PR libstdc++/91807, PR libstdc++/94627, PR fortran/95709,
PR fortran/93337, PR fortran/88379, PR fortran/71706, PR fortran/95880,
PR fortran/95829, PR fortran/95743, PR fortran/95881, PR fortran/95689,
PR fortran/95689, PR fortran/95587, PR fortran/95708, PR d/95250,
PR d/95173, PR tree-optimization/95804, PR tree-optimization/95638,
PR target/94954 (PPC), PR target/95874 (x86).
* distro-defaults.h: Don't define for offload compilers.
* Update the patch for PR lto/95604.
[dgit import unpatched gcc-9 9.3.0-15]