Macros starting with `i' in osfmk/kern

• invalid_pri osfmk/kern/sched.h:111
• ipc_kobject_vm_page_list osfmk/kern/ipc_kobject.h:122
• ipc_kobject_vm_page_steal osfmk/kern/ipc_kobject.h:125
• isdigit osfmk/kern/printf.c:173
• is_ipc_kobject osfmk/kern/ipc_kobject.h:115
• is_kernel_data_addr osfmk/kern/zalloc.c:86
• itk_lock osfmk/kern/task.h:218
• itk_lock_init osfmk/kern/task.h:216
• itk_unlock osfmk/kern/task.h:219