gpg: photoid: Move functions from exec.c.
* g10/exec.c (w32_system): Expose to public. (exec_write, exec_read, exec_finish, make_tempdir, expand_args): Move to photoid.c. * g10/exec.h: Likewise. * g10/photoid.c (exec_write, exec_read, exec_finish, make_tempdir) (expand_args): Move here.
- Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>