Comment out a non-working section

What was happening is that the code currently searched for a given CRTC/monitor
pair. However, this was not working, so I removed this part of the code.
Fixed linked list implementation

I had the implementation of a linked list backwards. This replaces it with a
sane version. I also added more log messages that also document success cases.
Added more log messages
Merge pull request #120 from TheNeikos/fix-framebuffer_creation

[WIP] Fix framebuffer creation
Add initialisation of shared memory