This patch makes the a-a-analyze-vmcore to use the suided helper
abrt-action-debuginfo-install-to-abrt-cache to install vmcore debuginfo
to /var/cache/abrt-di. Please note that the minor-fix.path is meant for
libreport. Run-tested, please review.
This is just a preparatory patch for converting a-a-a-vmcore to python
and make it use the same debuginfo downloading code as we use for C/C++
crashes. Run tested, please review and test.