comit version: V1.01
hardware version: V1.0
dependent boot: V1.0
commit author: elinux
commit time: 2014-07-01

commit summery:
1. add cramfs file system to kernel
2. add sw version to bootm head area
3. remove network modules driver

next job:
1. porting rt clock & watch dog
2. optimizing rootfs system size
3. real time kernel test