Add CMake build files for the tools.

git-svn-id: svn+ssh://svn.code.sf.net/p/winlirc/code/trunk@303 92c2518b-485e-4ca2-9c37-138eef3f838b
Improve CMake build files.

Plugin dlls are now written to <config-name>/plugins,
winlirc and tools exes are written to <config-name>.

git-svn-id: svn+ssh://svn.code.sf.net/p/winlirc/code/trunk@304 92c2518b-485e-4ca2-9c37-138eef3f838b