New rotate version

[Daniel Nöthen]

Oscar Casamitjana wrote:
> Hi all
> here you have my rotate version.
> This version is based in Chris Ball's rotate, but with some changes:
>
> * The adquisition engine is encapsulated in a thread.
> * Before rotating screen, it ensures two seconds for the new position
> * Backlight turns black while screen rotating.
>
Thanks Oscar.
This version works really good.
For all who don't know how to compile it:
arm-angstrom-linux-gnueabi-gcc -o rotate rotate.c -lpthread  -lXrandr