Fix merge_libraries script to handle more than one ambiguous file format.
Fix merge_libraries script to handle more than one ambiguous file format.

Allows you to specify a preferred format prefix for each platform. Only Windows is specified for now, set to 'pe-'.

firebase/firebase-cpp-sdk,firebase/firebase-cpp-sdk,firebase/firebase-cpp-sdk,firebase/firebase-cpp-sdk,firebase/firebase-cpp-sdk,firebase/firebase-cpp-sdk,firebase/firebase-cpp-sdk,firebase/firebase-cpp-sdk