Make unit_tactical_ai.lua use raw_move_command (Spring 97.0.1-27)

unit_tactical_ai.lua: use CMD_RAW_MOVE
customcmds.h.lua: add CMD_RAW_MOVE
add
cmd_raw_move.lua: handle raw_move_cmd as CMD_RAW_MOVE

clusterTool.lua: some cleanup for easy reading.

PROBLEM: why is the diff view showed major change in unit_tactical_AI.lua? I only did 10 line change (comment, and 1 line: spValidUnitID -> spUnitIsDead()) , delete 1 line (whitespace) , add 1 line CMD.MOVE = CMD_RAW_MOVE