wine.inf: Fix the type of some values in HKLM, System\CurrentControlSet\Control\Session Manager\Environment.

Remove an incorrect CryptProviderRelease call.

Makedll.rules: Add a generic EXTRADLLFLAGS variable instead of defining a specific variable for every possible parameter.

widl: Make sure to generate freeing calls for all non-simple structures with pointers and pointers to user marshalled types.

widl: Arrays should have freeing code generated on the server side, even if they are [in] parameters.

Fix the conditions under which pfnFree is called to only include arrays 
that will have been allocated, instead of being pointed to the buffer.