Fixed some missing name mangling of libTIFF symbols
When using ITK master & VTK master together, things will fail to link because both VTK and ITK are missing mangling of some libTIFF symbols. In particular, on macOS at least, they are missing global variables like TIFFFaxBlackCodes because the 'S' case was missing in the 'nm' command invocation.
So I built both VTK and ITK and ran 'nm' to get the proper symbol list. I then carefully compared between both libs, and both mangling files, and they are now unified. Each had things the other was missing or doing wrong.