Tweak Lucene analyzer's definition of a whole word

When words were linked with '_' or '.' Lucene would treat it as one
word. Change it so that Lucene treats them as separate words. The new
analyzer wraps StandardAnalyzer and changes the behavior such that '_'
and '.' are treated as whitespace. A reindex is necessary.

Bug: issue 2822
Change-Id: Ibed25695bf8e60335a2486e5e988a7c67b3da37d
3 files changed