[laptop-mode] Making install.sh more distribution independent

[Bart Samwel]

Hi Brian,

Brian Morrison wrote:
>> Is there any chance of an updated rpm for Fedora, or even an updated
>> spec file?
> 
> Bump!

Sorry about the delay -- things are a bit busy on this side. I'm going 
to do this somewhere in the next few weeks, once I find some time to 
safely backup and resize some partitions and make some space to install 
Fedora.

Cheers,
Bart