- send more data to make problems more obvious
- don't start the data with minus, it makes diffs harder to read
- skip the headers in the stdout comparison
- save to a file name to also verify 'filename_effective'
Ref: #5131
Makes curl_easy_getinfo() of "variable" numerical content instead return
the number set in the env variable `CURL_TIME`.
Makes curl_version() of "variable" textual content. This guarantees a
stable version string which can be tested against. Environment variable
`CURL_VERSION` defines the content.
Assisted-by: Mathias Gumz