QueryParser throws exception for string queries ending with ! (exclamation) [LUCENE-4454]

Query parser does not handle the ! (exclamation point) in the same way as the - (hyphen).

A string query with the final character being a ! causes a ParseException

"foo-" OK
"foo+" OK
"foo!" ERROR - Parse Exception
"foo! " OK (trailing white space)

I am using version 3.5 (have tried 3.6.1 - same issue) I was hoping 2566 may also have fixed this issue

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Migrated from [LUCENE-4454](https://issues.apache.org/jira/browse/LUCENE-4454) by Andrew Gibb

Start by reproducing the QueryParser behavior with the issue's four query strings, then trace how a terminal ! is parsed relative to - and +. Done means "foo!" parses without a ParseException while the other listed cases continue to work.

Written by the indexing model from the issue text.