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

jni/physfs-2.0.2/lzma/CPP/7zip/Compress/Branch/BranchCoder.cpp

@@ -0,0 +1,18 @@
+// BranchCoder.cpp
+
+#include "StdAfx.h"
+#include "BranchCoder.h"
+
+STDMETHODIMP CBranchConverter::Init()
+{
+  _bufferPos = 0;
+  SubInit();
+  return S_OK;
+}
+
+STDMETHODIMP_(UInt32) CBranchConverter::Filter(Byte *data, UInt32 size)
+{
+  UInt32 processedSize = SubFilter(data, size);
+  _bufferPos += processedSize;
+  return processedSize;
+}