Export scan_info.max_interval accessor
mrb: bind scan_info.max_interval
mrb: handle error case
mrb: support Int32 bulk value
mrb: support near search
doc: update po ja

related to 328b360e5a103ec31cce5942f8a97464b7dd3fbf and cfaf7aa1cda483ca9a1109b64b1b03ff3bd56c27
update file list

`make update-files`
related to #186
Merge pull request #194 from cosmo0920/po-translate-ja

doc: update ja Po and file lists

Patch by cosmo0920. Thanks!!!
Add missing configure dependency
mrb: link Onigmo as static library

I didn't know --with-pic configure option! We can create a static
library that can be liked to shared libraries with --with-pic,
--disable-shared and --enable-static configure options!
doc: re-add "update" target in "doc/locale/${LANG}/LC_MESSAGES"
Add missing scan_info.max_interval initialization
Add size check

grn_obj_cast() doesn't set record ID for nonexistent key and returns
GRN_SUCCESS. So a bulk object for record ID may not have any data.

In this change, treat no data record ID object as null.
Indent
test: update inspection result of grn_expr
doc: update prefix search example
doc: update example log for prefix search
doc: update file list
doc: improve description
doc ja: translate