Bug#746925: glib2.0 FTBFS on alpha: test-suite failure in async-splice-output-stream

[Michael Cree]

It's not possible to bisect the failed glib2.0 test
(async-splice-output-stream) on alpha as the commit that brings in the
new test is the first one to fail.  Looks like the bug was always there
but never trapped by the test suite until a test was introduced.

Interestingly the async-splice-output-steam test only fails when
run under an SMP kernel. It always passes on a single CPU system.  I
note the test does a call to the pthread code; that's probably the
problem --- there is definitely something occassionly racey in the
Alpha pthread library that is only exposed when running under a
multi-CPU system.

For the time being I have put glib2.0 into the "do-not-take-for-building"
list of the multi-cpu buildd, thus hopefully the next upload should
build successfully on the other (UP) buildd.

Cheers
Michael.