Minor formatting fixes
Minor indent fix
Set default moses_parameters::max_time to MAX_INT
Remove profanity
Fix comment of contin_knob::append_to
Reorder code block by dependency use (easier to review)
Make randset more generic and return a const reference instead of a copy

Return a const ref instead of a copy for efficiency reasons.
Set log level and log file name for moses-ant-hillclimbing program
Simplify build_knobs::sample_action_perms
Log (fine level) action permutations
Fix typo (cannonize -> canonize)
Set build_knobs::permitted_op constness
Fix build_knobs::action_cleanup() (id::sequential_and -> id::sequential_or)
Make action_subtree_knob perms argument const
Fix representation::ostream_prototype() to handle action_subtree_knob
Move all implementations of action_subtree_knob out of header file + fix toStr()
Move logical_subtree_knob implementation into knobs.cc
Remove log file before writing
Replace whitespace by | separator in action prototype display
Move simple_action_subtree_knob methods in knobs.cc