[patch] libstdc++/60793 Add *-*-dragonfly* to testsuite target selectors

[Jonathan Wakely]

A mechanical patch to run tests on DragonFlyBSD.

Tested x86_64--unknown-linux-gnu and x86_64-unknown-dragonfly3.6,
committed to trunk.

patch.txt.bz2
Description: BZip2 compressed data