t/force-delete: bash is not always at /bin/bash
t/force-delete: bash is not always at /bin/bash

Signed-off-by: Brandon Smith <7ecfd8f97b4729c6ff0799b0b4d40f870083b461@reardencode.com>
[1dc5917c2adeeba13d1ef33dbb40691a1b67cc65@defaultvalue.org: adjust commit message]
Reviewed-by: Rob Browning <1dc5917c2adeeba13d1ef33dbb40691a1b67cc65@defaultvalue.org>

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