htppd: lots of variable/function renaming in config file parsing.

htppd: lots of variable/function renaming in config file parsing.
fixed a bug where we trashed config file's name;
otherwise, should not have any real behavioral changes.

function                                             old     new   delta
check_user_passwd                                      -     338    +338
handle_incoming_and_exit                            2661    2649     -12
parse_conf                                          1650    1536    -114
checkPerm                                            338       -    -338
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(add/remove: 1/1 grow/shrink: 0/2 up/down: 338/-464)         Total: -126 bytes