[PATCH] Unknown cfg function

Looks like nobody actually ran the trivial "-k parse" test using 3.HEAD
or the initial quoted strings code.

Attached is a patch which adds a secondary form of undo for handling
incorrectly identified ConfigParser::FunctionNameToken elements. Instead
of aborting Squid on any non-function token containing a '(' we take the
wrongly identified assumed function name element and reform it with the
'(' delimiter and trailing element. The resulting aggregate token which
should have been identified initially is then sent to the upper parser
layer.

Amos