HEAT5052 when directory contains hardlinks

[raijinsetsu]

This is a bug.

• Which version of WiX are you building with?
  3.11.0.1701

• Which version of Visual Studio are you building with (if any)?
  N/A

• Which version of the WiX Toolset Visual Studio Extension are you building with (if any)?
  N/A

• Which version of .NET are you building with?
  3.5

• Describe the problem and the steps to reproduce it.
  If a directory contains a hardlink to another directory, heat.exe reports "heat.exe : error HEAT5052 : The directory 'PATH' could not be found.". Deleting the hardlinks stops the error. Symlinks (ie. files) do not cause the error.

1. Create a directory (SOURCEDIR)
2. Create a "readme.txt" file in SOURCEDIR
3. Create a hardlink to another directory in SOURCEDIR
4. Execute: %WIX%\bin\heat dir SOURCEDIR -nologo -var var.MySource -ag -cg source_files -dr INSTALLDIR -template fragment -sreg -sfrag -srd -ke -o source.wxs
5. Notice that the error appears immediately
6. Delete the hardlink from step 3
7. Execute the command from step 4
8. Notice that there is no error

• Describe the behavior you expected and how it differed from the actual behavior.
  Expected heat to enumerate the files in the directory, recursing into hardlinked directories.