JBAS-1050 Avoid stripping periods from search indexes

JBAS-1050 Avoid stripping periods from search indexes

Roll back an old customization that stripped periods from search index
values.  Removing the periods is unnecessary becuase the values are also
normalized by the search_normalize() function, which replaces periods
with spaces.

Adds an additional keyword index using the 'replace' normalizer to strip
periods from indexed values (without replacing them with a space) so
that we can additionaly index (for example) "g.i. joe" as "gi joe".

Signed-off-by: Bill Erickson <berickxx@gmail.com>