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

@@ -735,10 +735,12 @@
 /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