correct netconn API usage
fix:comment spelling mistake

relation=>relocation
add version checking
fix
fix
[finsh] fixed finsh issue.
Merge pull request #323 from weety/finsh_shell

[finsh] fixed finsh issue.
[DeviceDrivers] fix workqueue end of line issue
Merge branch 'master' of https://github.com/RT-Thread/rt-thread
[BSP] Add RT_DEVICE_CTRL_BLK_GETGEOME command handling in device control of LPC176x bsp
tools/keil: preserve the order of CPPPATH

The order of CPPPATH is important: some project would use the order of
CPPPATH to override the default configuration headers. This commit also
refine the this piece of code in a more Pythonic way.
Merge pull request #326 from grissiom/fix-mdk4

tools/keil: preserve the order of CPPPATH
add ipv6 support
Merge pull request #327 from hduffddybz/ipv6

[net] Add lwIP head porting to fetch lwIP new feature, for example IPv4/v6 dual stack.
Merge pull request #320 from tcz717/master

fix:comment spelling mistake
Merge pull request #315 from hduffddybz/fix

correct netconn API usage
Update SConscript: add spi to include path.
update lwip git head
add conditional compilation of ipv6 source file
change code style