Fix fingerprint incompatibility with btparser

The libcalls and calltree_leaves fingerprint components were not sorted
before hashing, due to me not being able to use qsort properly ...

Signed-off-by: Martin Milata <mmilata@redhat.com>
Signed-off-by: Michal Toman <mtoman@redhat.com>
abrt: parse kernel package version

Signed-off-by: Martin Milata <mmilata@redhat.com>
Signed-off-by: Michal Toman <mtoman@redhat.com>