Move non-Android specific stuff from android/jni to /UI.

Move source_assets one level up, too.
Also, start prototyping GameInfoCache, you'll see what it's for soon...

Core/FileSystems/BlockDevices.cpp

@@ -24,6 +24,19 @@ extern "C"
 #include <cstdio>
 #include <cstring>
 
+
+BlockDevice *constructBlockDevice(const char *filename) {
+	// Check for CISO
+	FILE *f = fopen(filename, "rb");
+	char buffer[4];
+	auto size = fread(buffer, 1, 4, f); //size_t
+	fclose(f);
+	if (!memcmp(buffer, "CISO", 4) && size == 4)
+		return new CISOFileBlockDevice(filename);
+	else
+		return new FileBlockDevice(filename);
+}
+
 FileBlockDevice::FileBlockDevice(std::string _filename)
 : filename(_filename)
 {