Ticket #2752: CMake: sdlExtern

* CMakeLists.txt files to build several of the Contrib libraries for use in sdlExtern
* also fixed a minor gcc compile error (needed another #include) and removed a remnant of the past (makeSdlExternTarball.bash) from CibFirmware

git-svn-id: https://isrsvn.usurf.usu.edu/svn/isr/roots/Contrib/gsoap@19232 a06e8daa-702c-0410-a579-eb5e6c4fa09d

Signed-off-by: Scott M Anderson <smanders@sdl.usu.edu>