Add a new getLength() method to IdentifierInfo, which relies on a newly added method to StringMapEntry.  Steve, please use this to remove the strlen calls in selector processing.
Add a new getLength() method to IdentifierInfo, which relies on a newly added
method to StringMapEntry.  Steve, please use this to remove the
strlen calls in selector processing.


git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@42481 91177308-0d34-0410-b5e6-96231b3b80d8

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