PATCH: Assorted BP fixes

[Greg McGary]

Andreas Jaeger <aj@suse.de> writes:

> And by default we even try to avoid creating core dumps in the
> testsuite.  For example test-skeleton.c explicitily disables core
> dumps.

IMO, it's bad to do this unconditionally.  Fortunately I see only one
test program (math/test-fenv) that does this.  It's easy enough to do
this outside the test program by prefixing the test run with `ulimit -c'
(assuming SHELL=bash), and that should be conditional.

Greg