build: Fix for configure generated files.
* src/Makefile.am (bin_SCRIPTS): Add gpgrt-config. (EXTRA_DIST): Add gpgrt-config.in and gpg-error-config-test.sh.in. (CLEANFILES): Add configure generated files.
- Fixes-commit: 7a7caf4ba1c460c9c36f754fcd0ebfeb4aa5cc6a
- Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>