ExecContext isn't used in this header file, and everything seems to
build just fine without this typedef. The typedef doesn't really belong
here, and at least my gcc-4.4.6 gives an error on type redefined.
-typedef struct ExecContext ExecContext;
-
int setup_tmpdirs(char **tmp_dir, char **var_tmp_dir);
int setup_namespace(char **read_write_dirs,
char **read_only_dirs,
int setup_tmpdirs(char **tmp_dir, char **var_tmp_dir);
int setup_namespace(char **read_write_dirs,
char **read_only_dirs,