add more device, cpu and kernel informations

Change-Id: Ia4783607a6105229750abe533a41104621bc6a32
cleanup cpu, kernel and memory info, close more streams

Change-Id: Ibdee992ee58a93ec88cc33b51032e69efc382154
check for nameless system feature

Change-Id: I2d1afb58a7eb03d298a38029161126379eaaffd4
huge cleanup

Change-Id: Ic525b7d6c23dba1a91c1727121b8131143daf374