Beginnings of win cmake support (not yet working), created by Graham Bloice,

Beginnings of win cmake support (not yet working), created by Graham Bloice,
some smaller changes by me.
- README.cmake
  Document how to (one day) run on Windows
- CMakeLists.txt
  Use MSVC compiler flags for MSVC instead of gcc flags
- FindWSWinLibs.cmake
  New: Creates HINTS for finding includes and libraries
  inside the Wireshark support library installation.
- FindXXX.cmake
  Make use of HINTS generated by FindWSWinLibs.cmake

This has not really been tested on Windows as my installation seems to have
automagically downloaded some fixes and is in an inconsistent state since.
Will probably need to reinstall.

git-svn-id: http://anonsvn.wireshark.org/wireshark/trunk@52194 f5534014-38df-0310-8fa8-9805f1628bb7