* [FlatBuffers] Patch to ignore the use of a CMake toolchain file which allows the default compilation options to be used.
Use CMake suffixes to allow flatc and shared libraries to be copied on non-Windows systems.
* [flatbuffers] Avoid use of CMAKE_EXECUTABLE_SUFFIX
I propose a change in how flatbuffers flatc.exe are placed in the tools directory after installation.
Currently flatc.exe is placed in a sub directory "flatbuffers" which scopes it out from PATH
Tested ok on my end, however i'm not 100% sure that i did this formally correct.
