Fix linking with libarchive

.libs/libappstream_builder_la-asb-package.o .libs/libappstream_builder_la-asb-package-deb.o .libs/libappstream_builder_la-asb-task.o .libs/libappstream_builder_la-asb-utils.o .libs/libappstream_builder_la-asb-plugin.o .libs/libappstream_builder_la-asb-plugin-loader.o   -O2 -march=i586 -mtune=generic -Wl,--as-needed -Wl,--no-undefined -Wl,-z -Wl,relro -Wl,-O1 -Wl,--build-id -Wl,--enable-new-dtags -pthread -Wl,--export-dynamic -pthread   -pthread  -Wl,-rpath -Wl,/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-glib/.libs ../libappstream-glib/.libs/libappstream-glib.so -lgtk-3 -lgdk-3 -lpangocairo-1.0 -lpango-1.0 -latk-1.0 -lcairo-gobject -lcairo -lgdk_pixbuf-2.0 -lsoup-2.4 -lgthread-2.0 -lgio-2.0 -lgobject-2.0 -lgmodule-2.0 -lglib-2.0 -Wl,-soname -Wl,libappstream-builder.so.1 -Wl,-version-script -Wl,.libs/libappstream-builder.ver -o .libs/libappstream-builder.so.1.5.3
.libs/libappstream_builder_la-asb-utils.o: In function `asb_utils_write_archive':
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:300: undefined reference to `archive_write_new'
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:301: undefined reference to `archive_write_add_filter_gzip'
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:302: undefined reference to `archive_write_set_format_pax_restricted'
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:303: undefined reference to `archive_write_open_filename'
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:319: undefined reference to `archive_write_data'
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:320: undefined reference to `archive_entry_free'
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:309: undefined reference to `archive_entry_new'
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:311: undefined reference to `archive_entry_set_pathname'
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:312: undefined reference to `archive_entry_set_size'
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:313: undefined reference to `archive_entry_set_filetype'
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:314: undefined reference to `archive_entry_set_perm'
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:315: undefined reference to `archive_write_header'
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:323: undefined reference to `archive_write_close'
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:324: undefined reference to `archive_write_free'
.libs/libappstream_builder_la-asb-utils.o: In function `asb_utils_explode_file':
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:162: undefined reference to `archive_entry_pathname'
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:166: undefined reference to `archive_entry_pathname'
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:181: undefined reference to `archive_entry_update_pathname_utf8'
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:184: undefined reference to `archive_entry_hardlink'
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:187: undefined reference to `archive_entry_update_hardlink_utf8'
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:191: undefined reference to `archive_entry_symlink'
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:194: undefined reference to `archive_entry_update_symlink_utf8'
.libs/libappstream_builder_la-asb-utils.o: In function `asb_utils_explode':
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:232: undefined reference to `archive_read_new'
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:233: undefined reference to `archive_read_support_format_all'
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:234: undefined reference to `archive_read_support_filter_all'
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:235: undefined reference to `archive_read_open_memory'
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:248: undefined reference to `archive_read_next_header'
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:265: undefined reference to `archive_read_extract'
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:268: undefined reference to `archive_error_string'
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:253: undefined reference to `archive_error_string'
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:278: undefined reference to `archive_read_close'
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:279: undefined reference to `archive_read_free'
/home/iurt/rpmbuild/BUILD/appstream-glib-0.2.1/libappstream-builder/asb-utils.c:238: undefined reference to `archive_error_string'
collect2: error: ld returned 1 exit status

Reference: https://github.com/hughsie/appstream-glib/issues/10
Signed-off-by: Igor Gnatenko <i.gnatenko.brain@gmail.com>