Adjust the block header received packet deserialization process
Adjust the block header received packet deserialization process

The deserialization process of block header should be finished
in two steps, the first is for the packet header, the second is
the block header content itself.

Fixing judge the wrong return value when compare checkSum value

Signed-off-by: Yanbo Li <1c8b1a69a8eb1b4e5c02e9a5735e0be37c71352e@gmail.com>

zhouziyan/DNA,dreamfly281/DNA,luodanwg/DNA,qingche123/DNA,luodanwg/DNA,zhouziyan/DNA,BooniesFX/DNA,sharpbear/DNA,superJinQing/DNA,superJinQing/DNA,zhengq1/DNA,zhengq1/DNA,dreamfly281/DNA,qingche123/DNA,BooniesFX/DNA,sharpbear/DNA