double checking precedence rules

A couple of operators are missing in the New Groovy grammar which I've 
just added - I wanted to double check folks thought the precedence 
rules look OK; they may need a bit of tweaking...

//	lowest  (13)  = *= /= %= += -= <<= >>= >>>= &= ^= |=
//			(12)  ?:
//			(11)  ||
//			(10)  &&
//			( 9)  |
//			( 8)  ^
//			( 7)  &
//			( 6)  == != <=>
//			( 5)  < <= > >=
//			( 4)  << >>
//			( 3)  +(binary) -(binary)
//			( 2)  * / %
//			( 1)  ++ -- +(unary) -(unary)  ~  !  (type)
//				  []   () (method call)  . (dot -- identifier qualification)
//				  new   ()  (explicit parenthesis)

I've put <=> the comparator operator which works like this...

     a <=> b

is equivalent to

     a.compareTo(b)

at the same precedence as != and ==. Does that fit? Its kinda like an 
operator that does both level 5 and 6 combined into one numeric result 
(rather than binary true/false)

Also we need to fit in the regex operators

=~	(find)
==~	(match)	

Should we put these in an existing bucket? Currently I've dropped them 
in 9.5 as a starting place - anyone have any better ideas?

James
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