rtems_shell_help static.
* libmisc/shell/main_hexdump.c: Make main_hexdump static.
* libmisc/shell/main_id.c: Make rtems_shell_main_id static.
* libmisc/shell/main_ifconfig.c: Make rtems_shell_main_ifconfig static.
* libmisc/shell/main_ln.c: Make rtems_shell_main_ln static.
* libmisc/shell/main_logoff.c: Make rtems_shell_main_logoff static.
* libmisc/shell/main_ls.c: Make rtems_shell_main_ls static.
* libmisc/shell/main_mallocinfo.c: Include <rtems/libcsupport.h>.
Remove private decls of malloc_info,
rtems_shell_print_unified_work_area_message.
Make rtems_shell_main_malloc_info static.
* libmisc/shell/main_medit.c: Remove private decl of
rtems_shell_main_mdump.
Make rtems_shell_main_medit static.
* libmisc/shell/main_mfill.c: Make rtems_shell_main_mfill static.
* libmisc/shell/main_mkdir.c: Make rtems_shell_main_mkdir static.
* libmisc/shell/main_mknod.c: Make rtems_shell_main_mknod static.
* libmisc/shell/main_mmove.c: Remove private decl of
rtems_shell_main_mdump.
Make rtems_shell_main_mmove static.
* libmisc/shell/main_mount.c: Make rtems_shell_main_mount static.
* libmisc/shell/main_msdosfmt.c: Make rtems_shell_main_msdos_format
static.
* libmisc/shell/main_mv.c: Include "internal.h".
Make rtems_shell_mv_exit, rtems_shell_main_mv static.
Remove private decls of strmode rtems_shell_main_cp,
rtems_shell_main_rm.
* libmisc/shell/main_mwdump.c: Make rtems_shell_main_mwdump static.
* libmisc/shell/main_netstats.c: Make rtems_shell_main_netstats
static.
* libmisc/shell/main_perioduse.c: Make rtems_shell_main_perioduse
static.
* libmisc/shell/main_pwd.c: Make rtems_shell_main_pwd static.
* libmisc/shell/main_rm.c: Include "internal.h".
Make rtems_shell_rm_exit static.
Remove private decl of strmode.
* libmisc/shell/main_rmdir.c: Make rtems_shell_main_rmdir static.
libmisc/shell/main_route.c: Make rtems_shell_main_route static.
* libmisc/shell/main_setenv.c: Make rtems_shell_main_setenv static.
* libmisc/shell/main_sleep.c: Make rtems_shell_main_sleep static.
* libmisc/shell/main_stackuse.c: Make rtems_shell_main_stackuse static.
* libmisc/shell/main_time.c: Make rtems_shell_main_time static.
* libmisc/shell/main_tty.c: Make rtems_shell_main_tty static.
* libmisc/shell/main_umask.c: Make rtems_shell_main_umask static.
* libmisc/shell/main_unmount.c: Make rtems_shell_main_unmount
static.
* libmisc/shell/main_unsetenv.c: Make rtems_shell_main_unsetenv
static.
* libmisc/shell/main_whoami.c: Make rtems_shell_main_whoami static.
* libmisc/shell/main_wkspaceinfo.c: Make
rtems_shell_main_wkspace_info static.
* libmisc/shell/main_getenv.c, libmisc/shell/main_setenv.c,
libmisc/shell/main_unsetenv.c: New. The shell can now play with
environment variables.
* libmisc/Makefile.am, libmisc/shell/shellconfig.h: Add setenv,
getenv, and unsetenv to the shell.
