update bsp/lpc178x/CMSIS/CM3/DeviceSupport/NXP/LPC177x_8x/startup/gcc/startup_LPC177x_8x.s
add powerpc bsp to travis-ci
add more command string for scons
Merge pull request #67 from rogerz/auto-ci

add powerpc bsp to travis-ci
dfs.c: fix null pointer bug.
Merge pull request #69 from geniusgogo/dfs-fixbug

dfs.c: fix null pointer bug.
Merge pull request #64 from ufwihg/gcc-lpc178x

update bsp/lpc178x/CMSIS/CM3/DeviceSupport/NXP/LPC177x_8x/startup/gcc/st...
fix interrupt compiling issue in PPC
Merge pull request #71 from BernardXiong/master

fix interrupt compiling issue for PPC.