Merge version 9.2.1-19+rpi1 and 9.2.1-21 to produce 9.2.1-21+rpi1

diff --cc debian/changelog
index c7e9b399e251a9a7d9bea38b406b7b082b0cb60a,047eecb85df219bc35a22bdea0e4e37ed8dcb3bd..78b631ea9630a01c8eae023c0df91c3a7ad17811
--- 1/debian/changelog
--- 2/debian/changelog
+++ b/debian/changelog
@@@ -1,15 -1,27 +1,40 @@@
- gcc-9 (9.2.1-19+rpi1) bullseye-staging; urgency=medium
++gcc-9 (9.2.1-21+rpi1) bullseye-staging; urgency=medium
 +
 +  [changes brought forward from gcc-8 8-20180207-2+rpi1 by Peter Michael Green <plugwash@raspbian.org> at Sat, 17 Feb 2018 00:20:23 +0000]
 +  * Don't pass -march=armv7+fp to compiler when building libatomic.
 +
 +  [changes introduced in gcc-8 8.2.0-16+rpi1 by Peter Michael Green]
 +  * Disable testsuite (build seems to hang after testsuite completes).
 +
 +  [changes introduced in gcc-9 9.1.0-10+rpi1 by Peter Michael Green]
 +  * Update symbols file for raspbian.
 +
-  -- Raspbian forward porter <root@raspbian.org>  Sun, 17 Nov 2019 04:50:26 +0000
++ -- Raspbian forward porter <root@raspbian.org>  Sun, 08 Dec 2019 03:50:38 +0000
++
+ 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.
+ 
+  -- Matthias Klose <doko@debian.org>  Sat, 30 Nov 2019 09:17:04 +0100
+ 
+ gcc-9 (9.2.1-20) unstable; urgency=medium
+ 
+   * Update to SVN 20191126 (r278718) from the gcc-9-branch.
+     - Fix PR libstdc++/92267, PR tree-optimization/91355, PR other/92090,
+       PR middle-end/90796, PR middle-end/90840, PR target/90867 (x86),
+       PR c/90898, PR middle-end/91450, PR rtl-optimization/92430,
+       PR target/92389 (x86), PR tree-optimization/90930, PR target/87833 (x86),
+       PR c++/90767, PR c++/92504, PR fortran/92113, PR fortran/92321,
+       PR fortran/92470, PR fortran/92470, PR fortran/92569, PR fortran/92050,
+       PR ada/92362, PR ada/92575.
+   * Add a libgphobos symbols file.
+   * Enable LTO builds again.
+ 
+  -- Matthias Klose <doko@debian.org>  Tue, 26 Nov 2019 08:16:37 +0100
  
  gcc-9 (9.2.1-19) unstable; urgency=medium
  

diff --cc debian/rules.defs
Simple merge

diff --cc debian/rules.patch
Simple merge