4680 nightly and bldenv need to set LC_ALL if they want to fully override the locale

*** 735,744 ****
--- 735,746 ----
  /usr/bin/id | grep '^uid=0(' >/dev/null 2>&1
  ISUSER=$?;      export ISUSER
  
  #
  # force locale to C
+ LANG=C;         export LANG
+ LC_ALL=C;       export LC_ALL
  LC_COLLATE=C;   export LC_COLLATE
  LC_CTYPE=C;     export LC_CTYPE
  LC_MESSAGES=C;  export LC_MESSAGES
  LC_MONETARY=C;  export LC_MONETARY
  LC_NUMERIC=C;   export LC_NUMERIC