Variables starting with `e' in iokit/IOKit/storage

• echo iokit/IOKit/storage/Makefile:50
• entries iokit/IOKit/storage/IOCDTypes.h:123
• EXCLUDE_HEADERS iokit/IOKit/storage/Makefile:28
• EXPORT_MI_DIR iokit/IOKit/storage/Makefile:52
• expr iokit/IOKit/storage/Makefile:53