gpg-error-config: Support "auto", architecture independent script.
* configure.ac (pkg_config_libdir): Set it "auto" when it looks multiarch environment. * src/gpg-error-config-new.in: Automatically detects the triplet.
The triplet detection mechanism is not sufficient. It's up to
distributions to apply more changes (in distribution specific way).
- Signed-off-by: NIIBE Yutaka <email@example.com>