added dependencies and build files (loosely inspired by Sebastian Dorda's love-native-android)

jni/physfs-2.0.2/lzma/CPP/Common/CRC.cpp

@@ -0,0 +1,14 @@
+// Common/CRC.cpp
+
+#include "StdAfx.h"
+
+extern "C" 
+{ 
+#include "../../C/7zCrc.h"
+}
+
+class CCRCTableInit
+{
+public:
+  CCRCTableInit() { CrcGenerateTable(); }
+} g_CRCTableInit;