doc: fix a typo
doc ja: update po
doc ja: update po
select drilldown[].sortby: support sort by column value of grouped record
windows msvc: add missing ";"

GitHub: fix #245

Reported by Hiroshi Hatake. Thanks!!!
Use nginx in repository not tar.gz

Because tar.gz doesn't have Windows related code.

We can't use Git repository at https://github.com/nginx/nginx because it
just push tar.gz-ed code...
grn.h msvc: really fix typedef for MSVC
Merge pull request #247 from cosmo0920/fix-typedef-for-msvc

grn.h msvc: really fix typedef for MSVC

Patch by Hiroshi Hatake. Thanks!!!