An issue was introduced in 6u18-b74 where the jucheck.exe did not have the proper manifest. This results in jucheck running without Admin permissions. jucheck calls iftw.exe during manual and auto update, by a call to CreateProcess(), which fails if UAC elevation is required.

This CR will implement a lightweight wrapper which does *not* need admin permissions. The wrapper will contain the normal iftw.exe and when run by jucheck, will extract iftw.exe and make the correct system call (ShellExecute) to launch the iftw installer with the proper UAC elevation prompt.