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

jni/physfs-2.0.2/lzma/CPP/7zip/Archive/Common/OutStreamWithCRC.cpp

@@ -0,0 +1,24 @@
+// OutStreamWithCRC.cpp
+
+#include "StdAfx.h"
+
+#include "OutStreamWithCRC.h"
+
+STDMETHODIMP COutStreamWithCRC::Write(const void *data, UInt32 size, UInt32 *processedSize)
+{
+  UInt32 realProcessedSize;
+  HRESULT result;
+  if(!_stream)
+  {
+    realProcessedSize = size;
+    result = S_OK;
+  }
+  else
+    result = _stream->Write(data, size, &realProcessedSize);
+  if (_calculate)
+    _crc = CrcUpdate(_crc, data, realProcessedSize);
+  _size += realProcessedSize;
+  if(processedSize != NULL)
+    *processedSize = realProcessedSize;
+  return result;
+}