try to profile by nodetime and Concurix, but I don't know how

log in to nodetime and Concurix, try to profile taijilang, but fail to do it.
fix bug: endless loop while parsing line comment after a block comment

fix bug: endless loop while parsing line comment after a block comment
cause:
1. atLineHead is set to false wrongly after parsing block comment
while x=sentence()
  should add if ... type==LINE_COMMENT: break