implement __rt_ffs for armv5
Merge pull request #57 from weety/new-branch

implement __rt_ffs for armv5
add the first porting for lwip 1.4.1
Merge pull request #58 from BernardXiong/master

Add the first porting for lwip 1.4.1.
add roadmap 1.2.0
Merge pull request #59 from BernardXiong/master

add roadmap 1.2.0
code cleanup for interrupt description
adjust the format of document
fix compiling issue in Jz47XX
add comments to help understanding pthread
adding *~ to .gitignore
Update GCC porting of LPC178x
Merge pull request #62 from rogerz/pthread-comments

add comments to help understanding pthread
Merge pull request #61 from rogerz/gitignore

adding *~ to .gitignore
update to interrupt description
Merge branch 'master' of https://github.com/RT-Thread/rt-thread
update bsp/lpc178x/CMSIS/CM3/DeviceSupport/NXP/LPC177x_8x/startup/gcc/startup_LPC177x_8x.s
implement a shell for module
update mini2440: Modify the interrupt interface implementations.
update sep4020: Modify the interrupt interface implementations.