fix install-no-fixedincludes mishaps

[Olivier Hainque]

On May 16, 2012, at 17:03 , Paolo Bonzini wrote:
> Ok, thanks!

 Great :-)

> All these are regressions, right?

 Right.

>  Please commit them to 4.7 branch too.

 Will do. Thanks for your prompt and constructive feedback,

 With Kind Regards,

 Olivier