TC: if TC is enabled, add the TC dir to CPPPATH

Some component that depend on TC would like to include the tc_comm.h.
Merge pull request #221 from grissiom/more-tc

TC: if TC is enabled, add the TC dir to CPPPATH
BBB: init timer on startup

It could fix the problem encountered in
https://groups.google.com/forum/?hl=en#!topic/rt-thread-cnusers/tpqZOMsIp8I
Merge pull request #224 from grissiom/BBB

BBB: init timer on startup
[Drivers] Add more debug utilities in MTD nand
Merge branch 'master' of https://github.com/RT-Thread/rt-thread
[Drivers] Fix the block start issue in MTD Nand operators
add file and path name auto completion for module shell
Merge branch 'master' of https://github.com/RT-Thread/rt-thread
Add FINSH_USING_MSH_ONLY option
add the bsp for lpc407x/408x
Merge pull request #225 from nongxiaoming/master

add the bsp for lpc407x/408x
[Finsh] cleanup the code style
Merge branch 'master' of https://github.com/RT-Thread/rt-thread
[Finsh] Add features to execute module.
[Finsh] code cleanup
fix the FINSH_USING_SYMTAB not defined and compiling error issue
[DFS] remove the unnecessary code
[CI] Add more BSP for travis-ci building
[CI] Add more BSP for travis-ci building