Fuck!

TODO:
1. cc-lazy still has trouble running perl, need debug!
2. do block linking


block linking:
1' add an exit block;
2' modify that exit block

change to 20100726
addPointerToBasicBlock doesn't work
it die at DominatorPass, DFSPass,
I don't know why, but since that function canno use, I don't have any reason use llvm-2.8svn
change back to llvm-2.7svn
use svn command:
svn update
svn merge -r HEAD:7381
svn commit -m "Roll back to llvm-2.7svn"