tracker issue : CF-4204917

Problem Description:
In CFSCRIPT in a User Defined Function If the first argument contains "Default" then a run time error occurs.

This issue only exists on the first argument of each function. The second argument works fine with a default value.

Error returned: 
"The DEFAULT argument passed to the init function is not of type [argument name]."

Steps to Reproduce:
1) Create a function in cfscript that contains a default value. 
2) Call the function.

This always returns the error. It does not matter if it's in a CFC or CFM page. It occurs no matter the type defined.

Example:
<cfscript>
    function test(string myVariable default="" hint="This should define a default value for the argument"){ return this;	}
</cfscript>
<cfset test()>
<cfset test("a")>

Actual Result:
Error:
"The DEFAULT argument passed to the init function is not of type myVariable."
or
"The DEFAULT argument passed to the init function is not of type [argument name]."

ColdFusion is interpreting the argument and as type instead of the variable name.
The error only occurs on the first argument.

Expected Result:
The a default value should be created for the argument. 
The error should NOT occur. 
ColdFusion should not think the argument name is a type.

Any Workarounds:
Remove all default values and use param to define a default value.

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