Moved additional CMake files into the CMake directory.

CMake/README.txt

@@ -0,0 +1,10 @@
+This folder contains a collection of toolchains definition in order to 
+support cross compilation. The naming scheme is the following:
+  host-system-compiler.cmake
+
+to use this at the time you run the initial cmake command use the 
+following parameter 
+   -DCMAKE_TOOLCHAIN_FILE=./toolchains/XXX-XXX-XXX.cmake
+ which maps to file in this folder. 
+
+For more details see: http://www.paraview.org/Wiki/CMake_Cross_Compiling