parse_reldep_str(): fix buffer overflow
delta_create(): fix the sizeof()
initialize _hawkey.PackageDelta type
use pool_lookup_deltalocation()
installonlies: fix sorting packages depending on the running kernel.
test_query_provides_in: avoid ck_assert_int_eq() as it evaluates args twice
add hy_packagedelta_get_baseurl()
add hy_packagedelta_get_downloadsize()
add hy_packagedelta_get_chksum()
tests: add a package that is not installed yet available in main, updates.
fix: goal: reason for installing when more packages are available to a selector.
tests: order packages in .repo files by name.

makes it easier to search/add new ones.
fixed: spec: hawkey running tests in python3