Default dst value for platform put-file.

[chaoren]

Summary

It should default to working-dir/src-filename if dst is not specified.

[chaoren]

We should only take the src filename, not the entire src.

[flackr]

LGTM

[clayborg]

Looks good.

lldb/trunk/source/Commands/CommandObjectPlatform.cpp

public:
     
     virtual bool
     DoExecute (Args& args, CommandReturnObject &result)
     {
         const char* src = args.GetArgumentAtIndex(0);
         const char* dst = args.GetArgumentAtIndex(1);
 
         FileSpec src_fs(src, true);
-        FileSpec dst_fs(dst, false);
-        
+        FileSpec dst_fs(dst ? dst : src_fs.GetFilename().GetCString(), false);
         PlatformSP platform_sp (m_interpreter.GetDebugger().GetPlatformList().GetSelectedPlatform());
         if (platform_sp)
         {
             Error error (platform_sp->PutFile(src_fs, dst_fs));
             if (error.Success())
             {
                 result.SetStatus (eReturnStatusSuccessFinishNoResult);
             }