Add bash completion for xbps-*
Welcome pkgdb-0.38.
xbps-query(8): added local search mode support (-s [-p]).
Merge pull request #54 from uggedal/bash-completion

Add bash completion for xbps-*
NEWS: mention bash/zsh completions.
AUTHORS: add Eivind Uggedal.
xbps-pkgdb: update for pkgdb-0.38.
xbps-pkgdb: unfix previous, pkg metafile must be internalized.
lib/pkgdb_conversion.c: remove metafile-sha256 obj if pkg contains no files.
xbps_find_pkg_orphans: fix regression adding false positives.
lib/transaction_ops.c: detect updates when an exact pkg version is set.
lib/repo_sync.c: use xbps_fetch_file_dest() instead of xbps_fetch_delta().

Until the generation of deltas does not work reliably just download
the repo files instead of trying to get the delta.
xbps-install: show  "pkgname (curver -> newver)" in updates; requested by @chneukirchen.
lib/repo_sync.c: xbps_fetch_file_dest() expects 4 args not 5 (hi Tox)
xbps_entry_install_conf_file: fix non debug build.
Disable best pkg matching code; see NEWS for more information.
bin/*/*.8: sync with reality.
NEWS: do not mention repodeltas, it's not ready yet.
data/Makefile: fix reinstallation.
xbps_repo_sync: fix swapped args (Hi Tox!)