FileInputStream: resolve resource urls obtained from URL.getPath()

Ex. Aeon Flux, Petit Prince open files from JAR with code like:
new FileInputStream(ClassLoader.getResource("menu.bin").getPath());
-> "file:/tmp/libbluray-bdj-cache/100d22e59d6d4/VFSCache/BDMV/JAR/00001.jar!/menu.bin"

Fixes #5