updates openssl package to work on Fedora 20
ilastik.cmake: Added qimage2ndarray as a dependency.
templates/exec.template: Added template to construct exec.sh, which acts like exec for BuildEM.
ilastik-gui.cmake: Added step to install exec.sh.
ilastik.cmake: Added step to install exec.sh.
boost.cmake: Upgraded version of Boost.
boost.cmake: Added libboost_container to the boost_LIBS build list.
vigra.cmake: Added the library libboost_container to the vigra CMake variable VIGRANUMPY_LIBRARIES.