gcc-9 (9.2.1-21) unstable; urgency=medium

  * Update to SVN 20191130 (r278870) from the gcc-9-branch.
    - Fix PR fortran/92100, PR tree-optimization/92222, PR ada/92489,
      PR fortran/92629.
  * Stop building -dbg packages, keep building the libstc++6-9-dbg package
    containing just the libstdc++ debug build.

[dgit import unpatched gcc-9 9.2.1-21]

Import gcc-9_9.2.1-21.debian.tar.xz

[dgit import tarball gcc-9 9.2.1-21 gcc-9_9.2.1-21.debian.tar.xz]

Import gcc-9_9.2.1.orig.tar.gz

[dgit import orig gcc-9_9.2.1.orig.tar.gz]