* libmisc/shell/cat_file.c, libmisc/shell/main_alias.c,
libmisc/shell/main_blksync.c, libmisc/shell/main_cat.c,
libmisc/shell/main_chdir.c, libmisc/shell/main_chmod.c,
libmisc/shell/main_chroot.c, libmisc/shell/main_cpuuse.c,
libmisc/shell/main_date.c, libmisc/shell/main_help.c,
libmisc/shell/main_id.c, libmisc/shell/main_logoff.c,
libmisc/shell/main_ls.c, libmisc/shell/main_mallocinfo.c,
libmisc/shell/main_mdump.c, libmisc/shell/main_medit.c,
libmisc/shell/main_mfill.c, libmisc/shell/main_mkdir.c,
libmisc/shell/main_mmove.c, libmisc/shell/main_mount.c,
libmisc/shell/main_mount_nfs.c, libmisc/shell/main_msdosfmt.c,
libmisc/shell/main_mwdump.c, libmisc/shell/main_perioduse.c,
libmisc/shell/main_pwd.c, libmisc/shell/main_rm.c,
libmisc/shell/main_rmdir.c, libmisc/shell/main_stackuse.c,
libmisc/shell/main_tty.c, libmisc/shell/main_umask.c,
libmisc/shell/main_unmount.c, libmisc/shell/main_whoami.c,
libmisc/shell/shell.h: Clean up done while writing documentation.
Some command improvements such as date now allows setting of the
current TOD. Often commands did not use stdout/stderr per
expectations and did not return -1 on an error.
