abrtd: sanitize mode and ovner of all elements

- the count element was never sanitized
- related to trac#927

Signed-off-by: Jakub Filak <jfilak@redhat.com>
configure: set default dump location to /var/tmp/abrt

- related to trac#927

Signed-off-by: Jakub Filak <jfilak@redhat.com>
rpm: preserve old configuration for F17< and REHL7<

- default dump location = /var/spool/abrt

- related to trac#927

Signed-off-by: Jakub Filak <jfilak@redhat.com>
pkg-config: export defaultdumplocation variable

- related to trac#927

Signed-off-by: Jakub Filak <jfilak@redhat.com>
testsuite: replace hardcoded dump location by variable

- related to trac#927

Signed-off-by: Jakub Filak <jfilak@redhat.com>