Add long description support to query and rquery.

Add support of long description query by %e option. Update man pages,
fix misprints and break placement in query_print function.
This commit fixes issue #468.
Fix repository version update.

As function set_repo_user_version accepts argument reposcver of int
type, it should use %d format string instead of %ld. This may cause
version number corruption on systems where sizeof(int) != sizeof(long).
Merge pull request #475 from vstakhov/master

Add support of long description query by %e field.