Link math tests using `sin()` to `libm`
Created originally on Bitbucket by vbernat (Vincent Bernat)
Was already merged in Bitbucket before import, marked as merged by the import user
While this linking seems to be done indirectly on most platforms, it
fails to work correctly on Sparc and S390x where an inappropriate
version of sin()
is used. This should additional occurrences of bug #68 (closed).
Tests are passing on amd64, sparc and s390x Debian Linux platforms. Both Python 2.x and Python 3.x.
There is still an unrelated problem on sparc.