Reorganized

each hook in one script file, so one can simply combine them by copying
them together.
Added whitespace checker
Added signed-off-by checker
Added commit message spell checker
added check for multi-change commit
Added multi signed-off-by check
Added header length check
Added [PRE-COMMIT] prefix for printing
Added ii irc commit notifier hook
added ii irc notifier hook comment
Added style checker hook (pre-commit)
Merge branch 'add-hooks'