Term containing * match against unstemmed text

Matching terms containing * against stemmed text didn't work too well
because Elasticsearch didn't stem the terms so things like pi*les would
match nothing while pi*le would match "pickles".  This is truely
backwards.

Bug: 56163
Change-Id: I1e1a56616409e0ebcf84117287bd11087044bab5
Merge "Term containing * match against unstemmed text"