sysutils/testdisk: Update to 7.1 and unbreak
- Make the source tarball fetchable again since the 7.1 release has left its pre-release status (hence the removal of the -WIP suffix).
- Pet portlint by making the USES block separate while I'm here.
Changelog:
https://github.com/cgsecurity/testdisk/blob/3bb714e6/NEWS
PR: 240066
Submitted by: cyberleo@cyberleo.net
MFH: 2019Q3