WARNING: multi directory commit, needed to secure it builds.
move the core/exportfuncs.* to backend-shared.
update backend-shared/CMakeLists.txt to generate backend-shared lib
update CMakeLists.txt to include backend-shared lib in link process.
update ios project to reflect new directory
Signed-off-by: Jan Iversen <jan@casacondor.com>
9c52aaf043