CI: Adjust job names

Job names now provide more information about platform, build environment,
system and configuration, which makes it easier to read.

The names for the build environments has been shorted to commonly known
names e.g. 'mingw64' for 'x86_64-w64-mingw32'.

Signed-off-by: Ralf Habacker <ralf.habacker@freenet.de>

.gitlab-ci.yml

@@ -89,59 +89,59 @@ windows amd64 docker:
     - chown -R user .
     - runuser -u user ./tools/ci-build.sh
 
-production:
+debian autotools production:
   extends: .debian-build
   variables:
     ci_variant: "production"
 
-debug:
+debian autotools debug:
   extends: .debian-build
   variables:
     ci_variant: "debug"
 
-reduced:
+debian autotools reduced:
   extends: .debian-build
   when: manual
   variables:
     ci_variant: "reduced"
 
-legacy:
+debian autotools legacy:
   extends: .debian-build
   when: manual
   variables:
     ci_variant: "legacy"
 
-cmake:
+debian cmake:
   extends: .debian-build
   variables:
     ci_buildsys: "cmake-dist"
 
-i686-w64-mingw32-debug:
+debian mingw32 autotools debug:
   extends: .debian-build
   variables:
     ci_host: "i686-w64-mingw32"
     ci_variant: "debug"
 
-i686-w64-mingw32-cmake:
+debian mingw32 cmake:
   extends: .debian-build
   when: manual
   variables:
     ci_buildsys: "cmake"
     ci_host: "i686-w64-mingw32"
 
-x86_64-w64-mingw32:
+debian mingw64 autotools:
   extends: .debian-build
   variables:
     ci_host: "x86_64-w64-mingw32"
 
-x86_64-w64-mingw32-cmake-debug:
+debian mingw64 cmake debug:
   extends: .debian-build
   variables:
     ci_buildsys: "cmake"
     ci_host: "x86_64-w64-mingw32"
     ci_variant: "debug"
 
-buster:
+debian buster autotools:
   extends: .debian-build
   when: manual
   image: "debian:buster-slim"
@@ -164,7 +164,7 @@ buster:
     - $env:DBUS_TEST_MALLOC_FAILURES = 0
     - $env:PATH += ";C:\bin"
 
-windows-cmake-mingw-ucrt64:
+windows msys64 ucrt64 cmake:
   extends: .win-build
   script:
     - $env:MSYSTEM = "UCRT64"
@@ -174,7 +174,7 @@ windows-cmake-mingw-ucrt64:
     # FIXME: glib from msys2 has issues, disable it for now
     - C:\msys64\usr\bin\bash -lc 'cmake -G \"MinGW Makefiles\" -S . -B build -DDBUS_WITH_GLIB=OFF && cmake --build build --config Release'
 
-windows-cmake-vs15:
+windows vs15-64 cmake:
   extends: .win-build
   script:
     - cmake -DCMAKE_PREFIX_PATH=C:/ -G "Visual Studio 15 2017 Win64" -DCMAKE_BUILD_TYPE=Debug -DDBUS_ENABLE_VERBOSE_MODE=OFF -S . -B build