build: Take care of POSIX shell path.
* configure.ac (INSTALLSHELLPATH): New. * src/Makefile.am: Change invocation of gpg-error-config-test.sh. * src/gpgrt-config.in (INSTALLSHELLPATH): To be substituted. * src/gpg-error-config-test.sh.in: Likewise.
- GnuPG-bug-id: T4574
- Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>