- add 'use warnings' and 'use strict' where missing from Perl scripts.
- fix 'Use of uninitialized value'.
- fix missing declarations.
- test1140.pl: fix 'Possible precedence issue with control flow operator'.
- fix other misc issues.
Most actual errors found during this PR were fixed and merged via
separate PRs.
Likely there are remaining warnings not found and fixed in this PR.
Closes#17877
This script makes a "random" build using configure and verifies that it
builds curl correctly. It randomly adds a number of the available
--disable-* flags to configure. When it detects a problem the script
stops, otherwise it continues trying more combinations.
Closes#16962
