xbps-src: multiple performance improvements

- use xbps-checkvers(1) to resolve dependencies.
- all dependencies are installed at once for the host and target.
- the show-build-deps target is now much faster.
- the update-bulk/show-repo-updates targets are now much faster.
- the update-sys/show-sys-updates targets are now much faster.
- the bootstrap target now works on musl hosts.
- simplified some loops.
- use cut(1) rather than awk(1) where applicable.
- multiple random changes to improve performance.

Based on work started by @Duncaen on #12433

Close #12433
Close #11282

common/xbps-src/libexec/xbps-src-doinstall.sh

@@ -63,7 +63,7 @@ if [ ! -f $XBPS_SUBPKG_INSTALL_DONE ]; then
             run_func pkg_install
         fi
     fi
-    setup_pkg_depends ${pkgname:=$PKGNAME}
+    setup_pkg_depends ${pkgname:=$PKGNAME} || exit 1
     run_pkg_hooks post-install
     touch -f $XBPS_SUBPKG_INSTALL_DONE
 fi