Move scripts for tests into the test directory, and do not export the Batch script for running tests

.gitattributes

@@ -6,8 +6,7 @@
 /Makefile export-ignore
 /PULL_REQUEST_TEMPLATE.md export-ignore
 /README.md export-ignore
-/check-supported-tools-tables export-ignore
-/custom-checks export-ignore
 /img export-ignore
 /run-tests export-ignore
+/run-tests.bat export-ignore
 /test export-ignore

run-tests

@@ -209,7 +209,7 @@ if ((run_custom_checks)); then
     echo
 
     set -o pipefail
-    docker run -a stdout "${DOCKER_FLAGS[@]}" ./custom-checks . || EXIT=$?
+    docker run -a stdout "${DOCKER_FLAGS[@]}" test/script/custom-checks . || EXIT=$?
     set +o pipefail
     echo
 
@@ -242,7 +242,7 @@ if ((run_custom_checks)); then
     echo 'Differences follow:'
     echo
 
-    ./check-supported-tools-tables || EXIT=$?
+    test/script/check-supported-tools-tables || EXIT=$?
 
     echo '========================================'
     echo 'Look for badly aligned doc tags'