Rename quota and restore; fix perl-related FTBFS
Rename quota and restore to have a "cyr_" prefix, and fix testsuite
hardcoding of those names.
Fix FTBFS related to a change in the way perl compiles XS modules.
Re-enable some tests on 32-bit rawhide because perl there now supports
quad types. But leave them disabled for F26.
Fix the location of cyr_fetchnews
More cleanup and commenting of the spec.
Bump to release 6.