precedence change warning

[John W. Eaton]

I recently noticed that we still have a warning about the precedence
change for || and && that was made way back in August 2002.

  warning: meaning may have changed due to change in precedence for && and || 
operators

We have a similar warning about the precedence change for | and & that
was made at the same time.

And another one for an associativity change involving the ^ and .^
operators that was made back in February 2005.

These changes were made for compatibility with Matlab, but have been
around long enough that it seems very few people would be affected by
the precedence or associativity changes.  It seems more likely to me
that the warnings would just be confusing now.

Are there any objections to removing these warnings for the 3.6
release?

jwe