Save config.h and config.log on failure too.

.github/workflows/c-cpp.yml

@@ -51,11 +51,13 @@ jobs:
       env:
         SUDO: sudo
         TEST_SSH_UNSAFE_PERMISSIONS: 1
-    - name: save regress logs
+    - name: save logs
       if: failure()
       uses: actions/upload-artifact@v2
       with:
-        name: ${{ matrix.os }}-${{ matrix.configs }}-regress-logs
+        name: ${{ matrix.os }}-${{ matrix.configs }}-logs
         path: |
+          config.h
+          config.log
           regress/*.log
           regress/valgrind-out/