Use #include <...> for including lib/*.h
Suppress a warning
windows: include io.h for close() and write()
select drilldown[]: support vector

But we can't get element in vector used for drilldown...
Add "multi_keys" to multi keys group functions
grn_table_group: use vector for key of multi keys group

It is for getting each grouped values from key.
select drilldown[].output_columns: support expression
select drilldown[].output_columns: support getting each grouped value by _key[N]
Support simple "XXX[N]" expression for column name
windows: use _strnicmp() preferentially

GitHub: fix #248

Reported by Hiroshi Hatake. Thanks!!!
select drilldown[].keys: support reference vector
select drilldown: support vector
Extract group code for single key and single result as a function
Add a test for group by reference vector
Add missing "," for "DDL:set_token_filters" log

Reported by Naoya Murakami. Thanks!!!
Don't use minified version of script

Because it is treated as E:source-is-missing in Debian.
Update copyright about jquery-1.7.2.js
Remove minified script
Remove javascript from missing-sources
Don't use minified version of javascript