Fixed #4 - Switched Firefox nspr hooking to try nss3.dll first (new combined dll) and fall back to ssl3.dll and nspr4.dll for pre-22 versions
Fixed an issue with the Firefox hooking where a few addresses could move if we tried hooking before the dll was loaded because it could have been unloaded after we got the addresses.  This is similar to the ncodehook issue we had before and the fix is to not free the library after getting the addresses.
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