- xbps_handle::transd -> new member with transaction dictionary.
- xbps_transaction_prepare: returns an int.
- xbps_transaction_commit: doesn't need any arg now.
- xbps_repository_pool_sync: doesn't need any arg now.
- xbps_pkgdb_update: removed xbps_handle * arg.
- xbps_transaction_missingdeps_get: removed, missing_deps array is in
xbps_handle::transd("missing_deps") array object.
- xbps_repository_pool_find_pkg in best match case, now returns the
newest package version available in rpool.
- Added xbps_repository_pool_find_pkg_exact that returns a package
by exact matching a pkgver.
- Removed xbps_handle_alloc(), the user is free to use memory
allocated from heap or stack.
- Improved API documentation in preparation for 0.12.
Bumped XBPS_API_VERSION again.
