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-prepkg.sh

@@ -43,7 +43,7 @@ if [ "$sourcepkg" != "$PKGNAME" ]; then
 fi
 
 source_file $XBPS_COMMONDIR/environment/build-style/${build_style}.sh
-setup_pkg_depends $pkgname
+setup_pkg_depends $pkgname || exit 1
 run_pkg_hooks pre-pkg
 
 touch -f $XBPS_PREPKG_DONE