* libmisc/shell/main_cp.c, libmisc/shell/main_ls.c,
libmisc/shell/main_mv.c, libmisc/shell/main_netstats.c,
libmisc/shell/main_rm.c, libmisc/shell/shell_script.c: Add #define
__need_getopt_newlib to enable getopt_r() support in newlib as
required by 4.10 toolset.
* libmisc/shell/shell.c, libmisc/shell/shell.h,
libmisc/shell/shell_script.c: Add support to echo the commands to
stdout. This is useful with the -v script option to show commands
as the run. Also added support to chdir to the directory the task
invoking the script is in.
* libmisc/shell/extern-cp.h, libmisc/shell/main_cp.c,
libmisc/shell/utils-cp.c: Update tro the latest FreeBSD version.
* libcsupport/Makefile.am, libcsupport/src/fchown.c: Add fchown
support.
* libmisc/shell/main_cp.c, libmisc/shell/main_netstats.c,
libmisc/shell/shell_script.c: Add memset() of getopt_data to
ensure it is zeroed out each time we use getopt_r().
* libmisc/shell/shell.c: Do not echo commands if input is not a tty.
This makes the scripts behave more like UNIX scripts.
