Hi,

I have implemented voice call history plugin using memory mapped file , 
this implementation tested on meego images right now as an external 
plugin to ofono. I am submitting the code here so that it  can be merged and will be used as builtin plugin  of ofono  in future.  Please review the patch and let 
me know your decision and any changes that needs to be done for accepting it.

Thanks
Raji Bommaraju