Add "set -eo pipefail" to "exclude" and "exclude-from" tests.
Add "set -eo pipefail" to "exclude" and "exclude-from" tests.

Don't allow non-tests to silently fail (i.e. mkdir, touch, echo, rm,
etc.).  Eventually all test code should have similar behavior.

Signed-off-by: Rob Browning <1dc5917c2adeeba13d1ef33dbb40691a1b67cc65@defaultvalue.org>

mhoeher/bup,mhoeher/bup,jbaber/bup,pombredanne/bup,mhoeher/bup,mhoeher/bup,pombredanne/bup,gevaerts/bup,mhoeher/bup,jbaber/bup,jbaber/bup,ToxicFrog/bup,ToxicFrog/bup,mhoeher/bup,jbaber/bup,ToxicFrog/bup,gevaerts/bup,tjanez/bup,pombredanne/bup,gevaerts/bup,tjanez/bup,pombredanne/bup,pombredanne/bup,tjanez/bup,gevaerts/bup,tjanez/bup,pombredanne/bup,ToxicFrog/bup,ToxicFrog/bup,tjanez/bup,tjanez/bup,jbaber/bup,gevaerts/bup,jbaber/bup