rar: import unrarsrc-5.5.8 for reference

this will allow us to diff against newer version of unrarsrc if we wish to update our port

reference/unrar/options.cpp

@@ -0,0 +1,35 @@
+#include "rar.hpp"
+
+RAROptions::RAROptions()
+{
+  Init();
+}
+
+
+RAROptions::~RAROptions()
+{
+  // It is important for security reasons, so we do not have the unnecessary
+  // password data left in memory.
+  memset(this,0,sizeof(RAROptions));
+}
+
+
+void RAROptions::Init()
+{
+  memset(this,0,sizeof(RAROptions));
+  WinSize=0x2000000;
+  Overwrite=OVERWRITE_DEFAULT;
+  Method=3;
+  MsgStream=MSG_STDOUT;
+  ConvertNames=NAMES_ORIGINALCASE;
+  xmtime=EXTTIME_HIGH3;
+  FileSizeLess=INT64NDF;
+  FileSizeMore=INT64NDF;
+  HashType=HASH_CRC32;
+#ifdef RAR_SMP
+  Threads=GetNumberOfThreads();
+#endif
+#ifdef USE_QOPEN
+  QOpenMode=QOPEN_AUTO;
+#endif
+}