CMake: Only install .d[i] druntime files (no C & ASM files)

Author: kinke

runtime/CMakeLists.txt

@@ -762,7 +762,8 @@ set(DRUNTIME_PACKAGES core etc ldc)
 
 install(FILES ${RUNTIME_DIR}/src/object.d DESTINATION ${INCLUDE_INSTALL_DIR})
 foreach(p ${DRUNTIME_PACKAGES})
-    install(DIRECTORY ${RUNTIME_DIR}/src/${p} DESTINATION ${INCLUDE_INSTALL_DIR})
+    install(DIRECTORY ${RUNTIME_DIR}/src/${p} DESTINATION ${INCLUDE_INSTALL_DIR} FILES_MATCHING PATTERN "*.d")
+    install(DIRECTORY ${RUNTIME_DIR}/src/${p} DESTINATION ${INCLUDE_INSTALL_DIR} FILES_MATCHING PATTERN "*.di")
 endforeach()
 if(PHOBOS2_DIR)
     install(DIRECTORY ${PHOBOS2_DIR}/std DESTINATION ${INCLUDE_INSTALL_DIR} FILES_MATCHING PATTERN "*.d")