Remove globbing of Core (#2510)

core/base/CMakeLists.txt

core/clib/CMakeLists.txt

core/clingutils/CMakeLists.txt

core/cont/CMakeLists.txt

core/dictgen/CMakeLists.txt

core/foundation/CMakeLists.txt

core/imt/CMakeLists.txt

core/lz4/CMakeLists.txt

core/lzma/CMakeLists.txt

core/macosx/CMakeLists.txt

core/meta/CMakeLists.txt

core/metacling/src/CMakeLists.txt

core/multiproc/CMakeLists.txt

core/newdelete/CMakeLists.txt

core/textinput/CMakeLists.txt

core/thread/CMakeLists.txt

core/unix/CMakeLists.txt

core/winnt/CMakeLists.txt

core/zip/CMakeLists.txt