class/elfwrapper: Set argv[0] to wrapper instead of wrapped cmd

[esben]

When calling the wrapped command, set argv[0] to the wrapper argv[0] instead of the full path to the wrapped command.

This should be safer, as argv[0] can be used by the wrapped command (where as the full path to the wrapped command is not safe to call directly). Also, commands using argv[0] for usage information looks nicer.

Signed-off-by: Esben Haabendal esben@haabendal.dk

[Villemoes]

OK if the sdk actually works; I've never really used an sdk generated by oe-lite.

[esben]

It works :)

[esben]

Actually, this does not work in cases where /bin/sh is not bash. And as ld.so is shifting out argv[0] anyway, there really is no point in doing this anyway.