tests: replace remaining CR bytes with the new macro %CR

There is no more mixed-newline file in the repository after this patch.
Except for`.bat` and `.sln` files (4 in total), all files use LF
newlines.

Also:
- `spacecheck.pl`: drop mixed-EOL exception for test data.
- runtests: add option `-w` to check if test data has stray CR bytes in
  them.
- build: enable the option above in test targets, except the CI-specific
  one where `spacecheck.pl` does this job already.
- tested OK (with expected failures) in CI with stray CRs added.
- cmake: enable option `-a` for the `tests` target. To continue testing
  after a failed test.

Follow-up to 63e9721b63 #19313
Follow-up to 6cf3d7b1b1 #19318
Follow-up to 4d2a05d3fe #19284

Closes #19347

tests/data/test60

@@ -38,19 +38,19 @@ more than one byte
 # Verify data after the test has been "shot"
 <verify>
 <protocol>
-PUT /bzz/%TESTNUMBER HTTP/1.1
-Host: %HOSTIP:%HTTPPORT
-User-Agent: curl/%VERSION
-Accept: */*
-Transfer-Encoding: chunked
-Content-Length: 1
-Expect: 100-continue
-
-13
+PUT /bzz/%TESTNUMBER HTTP/1.1%CR
+Host: %HOSTIP:%HTTPPORT%CR
+User-Agent: curl/%VERSION%CR
+Accept: */*%CR
+Transfer-Encoding: chunked%CR
+Content-Length: 1%CR
+Expect: 100-continue%CR
+%CR
+13%CR
 more than one byte
-
-0
-
+%CR
+0%CR
+%CR
 </protocol>
 </verify>
 </testcase>