Leaving the write bit unset after the test makes for ugly test output and the inability to rm -rf the source tree without chmod'ing it first.
24: extracting symlinks to a read-only dir ok rm: cannot remove `/home/j/tar-1.17/tests/testsuite.dir/24/gnu/out/dir/foo': Permission denied rm: cannot remove `/home/j/tar-1.17/tests/testsuite.dir/24/gnu/dir/foo': Permission denied rm: cannot remove `/home/j/tar-1.17/tests/testsuite.dir/24/oldgnu/out/dir/foo': Permission denied rm: cannot remove `/home/j/tar-1.17/tests/testsuite.dir/24/oldgnu/dir/foo': Permission denied rm: cannot remove `/home/j/tar-1.17/tests/testsuite.dir/24/ustar/out/dir/foo': Permission denied rm: cannot remove `/home/j/tar-1.17/tests/testsuite.dir/24/ustar/dir/foo': Permission denied rm: cannot remove `/home/j/tar-1.17/tests/testsuite.dir/24/v7/out/dir/foo': Permission denied rm: cannot remove `/home/j/tar-1.17/tests/testsuite.dir/24/v7/dir/foo': Permission denied rm: cannot remove `/home/j/tar-1.17/tests/testsuite.dir/24/posix/out/dir/foo': Permission denied rm: cannot remove `/home/j/tar-1.17/tests/testsuite.dir/24/posix/dir/foo': Permission denied
