logging hawkey version number.

Related: RhBug:1071404
logging: log checksums of written/loaded repositories. (RhBug:1071404)
doc: fixed typo
moved is_glob_pattern function to iutil
added nevra filter flag to query C API
added python bindings to nevra attribute filter
fixed clang warning of uninitialized variable
replaced deprecated fail_unless with ck_assert_int_eq
dist-sync doesn't replace arch