Convert all xbps-base-chroot pkgs to subpkgs.

Also introduce "libs.depends", that adds a rundep of a package
with a proper version. This is to avoid modifying all dependent
packages if there's an API/ABI change.

--HG--
extra : convert_revision : a46b11b8e9187bdb2bfc954ad5ff40ecd9c0fe31

templates/lzma-utils/libs.template

@@ -0,0 +1,17 @@
+# Template file for 'lzma-utils-libs'.
+#
+short_desc="${short_desc} (libraries)"
+long_desc="${long_desc}
+
+ This package contains only the ${sourcepkg} shared libraries."
+
+. ${XBPS_TEMPLATESDIR}/glibc/libs.depends
+
+do_install()
+{
+	local destdir=${XBPS_DESTDIR}/${pkgname}-${version}
+	local origdir=${XBPS_DESTDIR}/${sourcepkg}-${version}
+
+	mkdir -p ${destdir}/usr/lib
+	mv ${origdir}/usr/lib/liblzmadec.so* ${destdir}/usr/lib
+}