* remote-rdi.c (myprint): Replace 'PTR' with 'void *'.

* remote-rdi.c (myprint): Replace 'PTR' with 'void *'.
(mywrite, mywritec, mypause, myreadc, mygets): Likewise.
(_initialize_remote_rdi): Use add_set_boolean_cmd to register
commands that set boolean values.
(arm_rdi_remove_breakpoint): Rewrite to avoid uninitialized warning.
(arm_rdi_resume): Always initialize PC.
(arm_rdi_open): Don't use rslt as a boolean.
(arm_rdi_create_inferior, arm_rdi_close, arm_rdi_resume)
(arm_rdi_fetch_registers, arm_rdi_store_registers)
(arm_rdi_xfer_memory, arm_rdi_files_info, arm_rdi_kill)
(arm_rdi_insert_breakpoint, arm_rdi_remove_breakpoint): Likewise.