Merge pull request #11 from nongxiaoming/master

add the realboard firmware project
Add UI examples
Merge branch 'master' of https://github.com/RT-Thread/RealBoard4088
move nfs mount code out of init_thread

sometimes, mount nfs in init_thread may failed
update nfs example

disable PTHREAD in rtconfig.h
disable DHCP, use static ip address for lwip
Merge pull request #12 from prife/master

update nfs example
add SQLite test case.
Merge pull request #13 from geniusgogo/SQLite_Test

add SQLite test case.
Update README.md
Rename Sconscript to SConscript
Update main.c
Add upgrade program.
Move realboard to examples directory.
move realboard to examples
Remove the software ECC feature in NFTL
use release mode to compile SQLite example
Modify the configuration of realboard example
Change the building directory of board drivers
Use DoBuilding to build realboard target
Add command for scons building