superuser: Use su domain (abandon sudaemon)

su: Only enforce app root access on user builds

correct delivering process return code to caller

su: Don't start daemon for adb only mode

su: don't crash on SIGPIPE while passing return code to client

su: Enable Wall and fix build

su: daemon: Stop leaking child argv

su: utils: Stop leaking a string

su: appops: Free memory with delete

su: Use the AppOpsManager operation enum instead of hardcoding

superuser: Use service-specific init.rc

su: Fix appops id

su: Fix crash due to invalid file descriptor

switch from stat to fstat

replace strncpy with strlcpy + truncation checks