common/hooks: add some hooks moved from xbps-src (not yet used).

common/hooks/post-install/02-remove-libtool-archives.sh

@@ -0,0 +1,8 @@
+# This hook removes libtool archives (.la) unless $keep_libtool_archives is set.
+
+hook() {
+	if [ -z "$keep_libtool_archives" ]; then
+		msg_normal "$pkgver: removing libtool archives...\n"
+		find ${PKGDESTDIR} -type f -name *.la -delete
+	fi
+}