Bug#679736: spandsp: test suite fails to run when built in parallel (-j)

[Tzafrir Cohen]

Source: spandsp
Version: 0.0.6~pre20-1
Severity: serious
Justification: fails to build from source (but built successfully in the past)

The package spandsp has failed to build on some architectures. This is due
to the test suite not intended to build in parallel.

As Upstream does not consider this a bug, the simple fix is to disable
running the tests in parallel. A patch is included in SVN.