It was removed for output containing ' =' via `s/ =.*//`. With classic
MinGW, this made lines with `free()` end with CRLF, but lines with e.g.
`malloc()` end with only LF. The tests expect LF only.
Closes https://github.com/curl/curl/pull/4788
These verfy that the 'memory tracking' subsystem is actually doing its
job when using curl tool (#96), a test in libtest (#558) and also a unit
test (#1330), in order to prevent regressions in this functionallity.