[Tracker] tool-chain integration

[adamyg]

tool-chain support/issues:

• GnuWin32, legacy tools, several key utilises are out-dated, example include msgfmt, flex, bison and make.
  Consider detection and suggesting suitable work-around/alternatives.

• msys, several tools don't understand NUL redirection; can result in a NUL file being created. requiring explicit deletion. Consider detection and suitable Makefile generation.

   del \\\\?\\C:\\mc\\mcwin32\\apps\\NUL
  

• clang-cl; Clang cl enumeration mode;

  %VCINSTALLDIR%\Tools\Llvm\bin``` and ```%VCINSTALLDIR%\Tools\Llvm\x64\bin
  

• CMake ?

• Static build option ? Issue with 'LIBMAGIC_STATIC' #151

[adamyg]

clang-cl: Tooling, libraries and application complete, libappupdater pending.