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

• echo iokit/IOKit/firewire/Makefile:42
• entry iokit/IOKit/firewire/IOFireWirePriv.h:59
• EXCLUDE_HEADERS iokit/IOKit/firewire/Makefile:24
• execute iokit/IOKit/firewire/IOFWCommand.h:76
• EXPORT_MI_DIR iokit/IOKit/firewire/Makefile:44
• expr iokit/IOKit/firewire/Makefile:45