ci: Where possible, dryrun tests on uninstalled avrdude

This adds dryrun tests for uninstalled avrdude.

Tests on installed avrdude are kept where they exist,
but not added for all possible platforms.

Quick table showing testing of built avrdude, installation of avrdude,
and testing of installed avrdude and whether that
happens/succeeds/fails:

                              test              test
                              built   install   installed
    linux-x64_64-autotools  | succ   | yes    | succ
    linux-x86_64            | succ   | yes    | succ
    linux (cross-compile)   | n/a    | no     | <--
    macos-x86_64            | succ   | no     | <--
    macos-x86_64-autotools  | succ   | no     | <--
    msvc                    | succ   | broken | <--
    mingw                   | fail   | no     | <--

.github/workflows/build.yml

@@ -69,10 +69,12 @@ jobs:
           --enable-linuxspi
       - name: Build
         run: make -C _ambuild -j$(nproc)
+      - name: "Dryrun test (not installed)"
+        run: printf "\n\n" | ./tools/test-avrdude -v -e _ambuild/avrdude -c '-C _ambuild/avrdude.conf' -d0 -p"-cdryrun -pm2560" -p"-cdryrun -pavr64du28"
       - name: Install
         run: sudo make -C _ambuild install
-      - name: Dryrun_test
-        run: printf "\n\n" | ./tools/test-avrdude -v -e _ambuild/avrdude -c '-C _ambuild/avrdude.conf' -d0 -p"-cdryrun -pm2560" -p"-cdryrun -pavr64du28"
+      - name: "Dryrun test (installed)"
+        run: printf "\n\n" | ./tools/test-avrdude -v -d0 -p"-cdryrun -pm2560" -p"-cdryrun -pavr64du28"
       # Re-enable distcheck after the doc fixes
       # - name: distcheck
       #   run: make -C _ambuild -j$(nproc) distcheck "DISTCHECK_CONFIGURE_FLAGS=--disable-doc"
@@ -112,9 +114,11 @@ jobs:
           -B build
       - name: Build
         run: cmake --build build
+      - name: "Dryrun test (not installed)"
+        run: printf "\n\n" | ./tools/test-avrdude -v -e build/src/avrdude -c '-C build/src/avrdude.conf' -d0 -p"-cdryrun -pm2560" -p"-cdryrun -pavr64du28"
       - name: Install
         run: sudo cmake --build build --target install
-      - name: Dryrun_test
+      - name: "Dryrun test (installed)"
         run: printf "\n\n" | ./tools/test-avrdude -v -d0 -p"-cdryrun -pm2560" -p"-cdryrun -pavr64du28"
       - name: Archive build artifacts
         if: always()
@@ -229,6 +233,8 @@ jobs:
           -B build
       - name: Build
         run: cmake --build build
+      - name: "Dryrun test (not installed)"
+        run: printf "\n\n" | ./tools/test-avrdude -v -e build/src/avrdude -c '-C build/src/avrdude.conf' -d0 -p"-cdryrun -pm2560" -p"-cdryrun -pavr64du28"
       - name: Archive build artifacts
         if: always()
         uses: actions/upload-artifact@v3
@@ -278,7 +284,9 @@ jobs:
           
       - name: Build
         run: make -C _ambuild -j$(nproc)
-
+      - name: "Dryrun test (not installed)"
+        run: printf "\n\n" | ./tools/test-avrdude -v -e _ambuild/avrdude -c '-C _ambuild/avrdude.conf' -d0 -p"-cdryrun -pm2560" -p"-cdryrun -pavr64du28"
+
   msvc:
     runs-on: windows-latest
     strategy:
@@ -310,6 +318,8 @@ jobs:
           -B build
       - name: Build
         run: cmake --build build --config ${{env.BUILD_TYPE}}
+      - name: "Dryrun test (not installed)"
+        run: Write-Host "`n`n" -NoNewline | Invoke-Expression -Command './tools/test-avrdude -v -e build/src/avrdude.exe -c "-C build/src/avrdude.conf" -d0 -p"-cdryrun -pm2560" -p"-cdryrun -pavr64du28"'
       - name: Archive build artifacts
         if: always()
         uses: actions/upload-artifact@v3
@@ -373,6 +383,8 @@ jobs:
           -B build
       - name: Build
         run: cmake --build build
+      - name: "Dryrun test (not installed)"
+        run: printf "\n\n" | ./tools/test-avrdude -v -e build/src/avrdude.exe -c "-C build/src/avrdude.conf" -d0 -p"-cdryrun -pm2560" -p"-cdryrun -pavr64du28"
       - name: Archive build artifacts
         if: always()
         uses: actions/upload-artifact@v3