Only generate globally unique parameter names for inline functions

[chrisrink10]

Fixes #1212

Another possible solution to the parameter name issue.

[chrisrink10]

@ikappaki after spending some time thinking about it, this would be more in line with what you initially requested in #1212. I still have some mild concerns about not all cases being covered for inlines, but I think this is probably good enough for the wide majority of cases.

[ikappaki]

Hi @chrisrink10, that is better thanks.